If you are considering buying a used BMW 3 Series, there are several major reliability issues worth knowing about first. Our garage database tracks 44 known faults for this model, 30 of them rated high severity. Every one below is a repair bill a seller has good reason not to mention.
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Generation 1 of 34 known faults · 7 owner reports · 26 good notes
BMW 3 Series E46 (1998 to 2005) problems
SuspensionHigh severity📝 Editorial
Rear subframe / floor pan cracking and tearing away from the chassis
Rough guide
£1000-2500
Typical symptoms
creaking or popping noise from the rear over bumps
clunking when accelerating or changing gear
unstable handling at the rear
Affected vehicles
Engines:
All (especially 328i, 330i, M3)
Typical mileage:
80000-150000 miles
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Engine/EmissionsHigh severity📝 Editorial
The M47 150bhp 320d models (EU3, built before October 2003) gained a reputation for repeated turbo failure, possibly due to extended oil service intervals. Injector failures are also common. ECU reprogramming is required after turbo replacement.
Rough guide
£800-1500
Typical symptoms
Loss of power, especially on hills
Blue smoke from exhaust (burning oil)
Whining or whistling noise from engine bay
Engine goes into limp mode
Affected vehicles
Engines:
M47 320d 150bhp (EU3, pre-Oct 2003)
Typical mileage:
50000-120000 miles
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Engine/EmissionsHigh severity📝 Editorial
Inlet manifold swirl flaps on the 530d (M57 engine) are prone to breaking off and being ingested by the engine, causing catastrophic damage. This primarily affects cars from 2001 to 2004.
Rough guide
£5000-10000+
Typical symptoms
Sudden loss of power
Loud metallic noises from engine
Engine seizure
Check engine light
Affected vehicles
Engines:
M47 320d (especially automatic)
Typical mileage:
80000-130000 miles
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Heavy oil consumption on 4-cylinder petrol engines is often due to O-rings hardening and failing after about six years. This causes oil to seep from Valvetronic solenoids (front of engine) and, on automatics, from the vacuum pump (rear of engine).
Rough guide
£300-800
Typical symptoms
Oil leaks visible under the car
Burning oil smell (especially from vacuum pump leak)
Low oil level warning
Affected vehicles
Engines:
All 4-cylinder petrol engines
Typical mileage:
60000-100000 miles
1 more owner report backs this up
March 2014A 2005 BMW 318i with 65,000 miles suffered a misfire due to wear in the Valvetronic rockers, which was temporarily resolved by disconnecting the system.
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What owners report on the E46
7 single reports, unconfirmed
One owner each, in their own words rewritten as a line, and not counted in our risk scoring. A fault joins the list above once a second report or an editorial source backs it.
Suspension and steering · September 2014A 2002 BMW E46 330D Touring with 149,000 miles experienced multiple rear spring breakages over several years.
Engine · June 2013A BMW E46 320d experienced two timing chain failures at 124,000 and 194,000 miles, despite regular oil and filter changes.
Electrics · May 2013A car failed its MoT due to an airbag warning light, with the owner paying £1,500 for the repair.
Engine · December 2012Four-cylinder petrol engines can suffer from loosening sump bolts, which may even fall out, requiring regular checks.
Electrics · April 2012The wiring cable connecting the body to the hatchback of a Touring model can chafe and fail, posing a fire risk.
Engine · January 2012On the 320d, the damped dual-mass auxiliary belt crankshaft pulley can eventually fail, requiring replacement.
Bodywork · November 2011Ineffective front wing liners can trap moisture, leading to corrosion perforation and bubbling paint on the wings.
What owners like about the E46
26 notes
The E30 3 Series, replacing the E21, featured an appealing design and measured 14 feet 2 inches long by 5 feet 5 inches wide.
Engine options included a 90bhp 1.8 in the 316i, a 105 to 115bhp 1.8 in the 318i, and a 136bhp twin-cam 1.8 in the 318iS.
This model was sold in the UK without mandatory catalytic converters, reflecting the regulations of the time.
The 318iS, 320i, 325i, and M3 variants of this model are still considered enjoyable to drive.
A 1988 3 Series E30 featured galvanised body panels, enhancing its resistance to corrosion from that year onwards.
From September 1988, the 316i featured a 102bhp 1,596cc belt-cam four-cylinder engine, which remained until early 1994.
An American-specification 325i automatic car ran smoothly to 6,000 rpm, even after covering over 1,000,000 miles.
The 136 bhp chain-cam 16v M42-powered 318iS is gaining recognition as a minor classic, with the M3 being the true classic.
Four-cylinder versions of this model offered superior handling compared to the six-cylinder variants.
The 3 Series Compact, based on the E36, was lighter and therefore quicker, measuring 13 feet 10 inches long.
Engine options included a 102bhp 1.6, a 90bhp 1.7 diesel, and a 140bhp 1.9 litre twin-cam 318Ti.
The 1994 to 2001 Compact was rated as the sixth most reliable car in a 2007 survey, with nine faults per 100 vehicles.
The E36 3-Series Convertible, introduced in May 2004, featured M43 four-cylinder engines with timing chains from 1994.
This convertible model measured 14 feet 7 inches long by 5 feet 7 inches wide, with a weight ranging from 1,190kg to 1,385kg.
Engine options included a 115bhp 1.8, a 150bhp 2.0 litre six, and a 170bhp 2.5 litre six, with no diesel convertibles for the UK.
Six-cylinder models of this car are noted for their excellent brakes and impressive overall build quality.
The older iron block chain-cam 320i and 325i twin-cam engines proved to be the most durable and generally reliable.
The BMW 3-Series was ranked as the fifth most reliable car in a 2001 Fleet News Survey of over 620,000 vehicles.
The car achieved a good three-star rating in 2001 NCAP crash tests, but was criticised for lacking a third rear lap/diagonal seatbelt.
The E46 model achieved a high ranking in a 2002 customer satisfaction survey of V and W registered vehicles.
BMW had the sixth lowest average cost for warranty claims among cars up to 10 years old in a 2002 Warranty Direct index.
The E46 3-Series achieved ninth place overall in the 2003 What Car? J.D. Power Customer Satisfaction Survey.
A 330d model was recognised as one of the top ten cars by Autocar in 2003.
The 3 Series Compact, based on the E46, was slightly lighter, resulting in improved speed and handling characteristics.
BMW vehicles generally exhibited below-average warranty repair costs in the 2003 Warranty Direct Reliability index.
This model ranked 14th in a 2005 JD Power/What Car Survey, achieving an 82.9% satisfaction score among 23,000 cars.
The N47 timing chain runs at the BACK of the engine, behind the flywheel, so reaching it means removing the gearbox or dropping the engine. The original chain and plastic guides were underspecified: guides break up, the chain stretches and can snap, bending valves and in bad cases destroying the engine. Debris from the guides can also block the oil pump pickup and wipe the bearings. BMW issued revised parts (redesigned guides and crankshaft) under a quality-enhancement programme and later builds fail less often, but revised N47T engines still fail, so a late build date is not a clean bill of health. Specialist chain jobs start around 1350-2500 pounds; after a snap, a rebuild runs 3000-6500 pounds
Rough guide
£1350-6500
Typical symptoms
rhythmic scraping or metallic rattling from the REAR of the engine, near the bulkhead
engine management light or camshaft correlation fault codes
sudden loss of power or complete engine failure with no prior warning
April 2018A 2010 BMW E93 320d convertible with an N47 engine experienced timing chain failure at 93,000 miles, despite full dealer service history.
August 2017A late-registered 2012 BMW E91 320dED with an N47 engine had an imminent timing chain failure corrected at 50,000 miles.
July 2017A 2011 BMW 318D M Sport Plus with 114,000 miles had a timing chain failure, but BMW replaced the engine at a modest cost.
October 2016A 2011 BMW 3 Series Touring 320D with 22,000 miles developed a scraping noise from its N47 timing chain tensioner.
April 2016A 2011 BMW 318d suffered N47 timing chain failure, destroying the engine; BMW offered 50% parts goodwill on an £11,400 estimate.
December 2015An E90 320d auto with an N47 diesel engine had timing chain failure at 160,000 miles, costing £1,600 to repair.
March 2015A 2008 320d experienced timing chain failure at 80,000 miles, requiring repair.
October 2014A BMW 316d developed a metallic 'ticking' sound from the engine, worsening after 40,000 kilometres, requiring timing chain replacement.
October 2014A 2014 BMW 316d N47 engine developed a metallic ticking sound after 40,000 kilometres, with the dealer recommending timing chain replacement.
October 2012A 2007 320d coupe at 47,000 miles suffered total engine failure, requiring a new crankshaft, bearings, and timing chain assembly.
February 2012A 2.0 litre N47 diesel engine experienced timing chain failure at around 90,000 miles, after about five years of use.
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Fuel SystemMedium severity📝 Editorial
Piezo fuel injector failure and NOx sensor fouling, preventing stratified charge operation and causing misfires
Rough guide
£1500-2500
Typical symptoms
rough idle on cold start
strong smell of unburnt fuel
hesitation and misfires
engine management light
Affected vehicles
Engines:
2.5i / 3.0i (N53 Petrol)
Typical mileage:
60000-100000 miles
2 more owner reports back this up
July 2016A 2010 320i at 75,000 miles experienced fuel injector problems, which led to coil pack and NOx sensor failure, with repairs costing £2k.
April 2014A high pressure fuel pump failed on a 2007 BMW 325i convertible three days after purchase, requiring repair.
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Engine/EmissionsHigh severity📝 Editorial
High Pressure Fuel Pump (HPFP) failure and severe turbo wastegate rattle
Rough guide
£800-2500
Typical symptoms
long cranking before engine starts
half engine light / limp mode on hard acceleration
loud metallic rattling from the exhaust side when lifting off the throttle
Affected vehicles
Engines:
3.0 Twin Turbo (N54)
Typical mileage:
60000-100000 miles
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ElectricalMedium severity📝 Editorial
iDrive CCC unit motherboard failure causing constant reboot loop (BMW logo flashing)
Rough guide
£300-600
Typical symptoms
iDrive screen stuck on BMW logo
screen rebooting every 20 seconds
loss of radio, navigation, and parking sensors
Affected vehicles
Engines:
All pre-LCI
Typical mileage:
80000-120000 miles
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Screws for the housing of the variable camshaft timing (VANOS) adjustment unit can loosen or break, leading to oil leaks, affected valve timing, and potential engine emergency mode or stalling. This was subject to a worldwide recall, with a specific UK DVSA recall (R/2014/068) for models built between 2009-2011.
Rough guide
£1000-2000
Typical symptoms
Engine emergency mode activated
Distinct change in engine running
Orange engine management warning lamp
Loss of power
Affected vehicles
Engines:
3.0 Single Turbo (N55)
Typical mileage:
Unknown miles
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ElectricalHigh severity💬 4 owner reports, 2017 to 2018
The connection between the B+ cable and the Power Distribution Box can become damaged by wear and heat, leading to high contact resistance and potential malfunction. This can result in a non-start situation or, in extreme cases, the engine cutting out without warning while driving. This was subject to a recall (R/2017/114).
Rough guide
£0 (free safety recall)
Typical symptoms
Non-start situation
Flickering instrument cluster (dash)
Engine misfire
Engine cutting out without warning
Affected vehicles
Engines:
All Petrol and Diesel
Typical mileage:
Unknown miles
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Engine/EmissionsHigh severity💬 3 owner reports, 2015 to 2017
Big end shell bearing failure, potentially leading to a connecting rod through the engine block, is reported on the N46 4-cylinder petrol engines. This catastrophic failure can be caused by incorrect oil usage or insufficient oil changes.
Rough guide
£5000-11000 (engine replacement)
Typical symptoms
Loud knocking or banging noise from the engine
Sudden engine seizure or failure
Oil leaks from the engine block
Engine management light illuminated
Affected vehicles
Engines:
1.8i / 2.0i (N46 Petrol)
Typical mileage:
60000-80000 miles
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Engine/EmissionsHigh severity📝 Editorial
The screws for the housing of the variable camshaft timing (Vanos) adjustment unit for the intake and exhaust camshafts can become loose or break. This can lead to engine stalling or loss of power. This issue was subject to a worldwide recall.
Rough guide
£0 (free safety recall)
Typical symptoms
Engine warning lamp illuminated
Loss of engine power
Engine stalling
Affected vehicles
Engines:
3.0 litre 6-cylinder petrol (N55)
Typical mileage:
Any miles
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Fuel SystemHigh severity💬 3 owner reports, 2010 to 2012
High Pressure Fuel Pump (HPFP) and fuel injector failures are common on N53 and N54 6-cylinder petrol engines. This can lead to long cranking times, reduced engine performance, and engine management lights.
Rough guide
£1000-2000+
Typical symptoms
Long cranking time to start the engine
Engine management light on
Reduced engine power (limp mode)
Rough running or misfires
Affected vehicles
Engines:
N53 / N54 6-cylinder petrol (e.g., 330i, 335i)
Typical mileage:
50000-100000 miles
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Engine/EmissionsMedium severity💬 3 owner reports, 2015 to 2016
NOx sensor and NOx trap failures are reported on N53 petrol engines, leading to engine management lights and potentially affecting emissions and fuel economy. Camshaft position sensor failures are also linked.
Rough guide
£1000-2000
Typical symptoms
Engine management light on (amber)
Intermittent rough running
Reduced fuel economy
Failed emissions test
Affected vehicles
Engines:
N53 petrol (e.g., 318i, 325i)
Typical mileage:
30000-60000 miles
1 more owner report backs this up
August 2016A 2010 BMW E90 318i with 15,000 miles experienced repeated NOx and camshaft position sensor failures, costing £750 each time.
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ElectricalMedium severity💬 2 owner reports, 2013
The ESP warning light can indicate a 'Boost Pressure Sensor G201' fault, which is embedded in the Teves Mk 60 ABS system. This often requires replacement of the entire ABS control unit/pump, a costly repair, though repair kits are available.
Rough guide
£350-1850
Typical symptoms
ESP/ABS warning light on dashboard
Loss of traction control or ABS function
Intermittent loss of power and juddering (if reluctor ring/sensor related)
Affected vehicles
Engines:
All
Typical mileage:
50000-100000 miles
1 more owner report backs this up
July 2015A 2010 E90 BMW 3 Series with under 40,000 miles needed three ABS wheel sensors and a NOx sensor, costing £2,000.
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SuspensionMedium severity💬 2 owner reports, 2014
Cracked alloy wheels, particularly 18-inch or larger, are a persistent problem on E90-E93 models, especially on cars 5 years old or more. This leads to tyres losing pressure and requires expensive wheel replacement.
Rough guide
£200-500+ per wheel
Typical symptoms
Tyre constantly losing pressure
Vibration through the steering wheel
Visible cracks on the inner rim of the wheel
Affected vehicles
Engines:
Models with 18" or 19" alloy wheels
Typical mileage:
50000+ miles
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ElectricalHigh severity💬 6 owner reports, 2015 to 2018
The connection between the positive battery cable connector and the fuse box terminal can fail due to incorrect installation, wear, and heat. This can lead to a sudden loss of all electrical power, potentially while driving, and has been linked to a fire risk. This was subject to a US NHTSA recall and later a UK DVSA recall (R/2017/114, R/2018/132).
Rough guide
£0 (free safety recall)
Typical symptoms
Complete power failure (non-start or engine cut-out)
Flickering instrument cluster
Engine misfire
Burning smell from fuse box area
Affected vehicles
Engines:
All petrol and diesel models
Typical mileage:
Any miles
1 more owner report backs this up
September 2018A 2009 BMW 320i SE was subject to two safety recalls for a battery terminal line and a blower regulator plug connection, with parts delays reported.
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Engine/EmissionsHigh severity📝 Editorial
Turbocharger failures are commonly reported on the older M47 2.0 litre diesel engine, particularly when subjected to short journeys and extended oil change intervals.
Rough guide
£1000-1800
Typical symptoms
Loss of power, car enters limp mode
Excessive smoke from exhaust (blue or white)
Whining or whistling noise from the engine bay
Increased oil consumption
Affected vehicles
Engines:
2.0d (M47 Diesel)
Typical mileage:
60000-100000 miles
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Engine/EmissionsMedium severity💬 7 owner reports, 2011 to 2018
Repeated failures of ignition coils and fuel injectors are common on the N43 4-cylinder petrol engines. Additionally, crankshaft sensors are prone to corrosion, requiring replacement and an ECU software update.
Rough guide
£500-1200
Typical symptoms
Engine misfires or runs rough
Engine management light illuminates
Difficulty starting the engine
Reduced engine power
Affected vehicles
Engines:
1.6i / 2.0i (N43 Petrol)
Typical mileage:
40000-90000 miles
1 more owner report backs this up
January 2011Repeated coil and injector problems have been observed on 4-cylinder petrol engines from 2007.
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Engine/EmissionsHigh severity💬 10 owner reports, 2011 to 2019
The N53 6-cylinder petrol engines are prone to repeated failures of ignition coils, fuel injectors, and the high-pressure fuel pump (HPFP). These issues can lead to misfires, reduced power, and difficulty starting. Honest John notes a TSB recall notice for 325i models post-September 2007 regarding injector failure.
Rough guide
£1000-2500
Typical symptoms
Engine misfires, rough idle, or hesitation under acceleration
Engine management light illuminated
Longer cranking times to start the engine
Sudden loss of power or car entering limp mode
Affected vehicles
Engines:
2.5i / 3.0i (N53 Petrol)
Typical mileage:
30000-80000 miles
2 more owner reports back this up
November 2018A 2007 E92 325i Coupe at 70,000 miles developed an engine misfire, which was fixed by changing all six coil packs.
March 2011Coil and injector problems have been reported on 6-cylinder petrol engines from 2007 onwards.
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Engine/EmissionsHigh severity💬 3 owner reports, 2015 to 2018
The N57 3.0 litre diesel engine, like the N47, is susceptible to timing chain failure, often due to extended oil change intervals. This can lead to catastrophic engine damage. Reports indicate failures at various mileages, with BMW sometimes contributing to repair costs.
Rough guide
£1600-6800
Typical symptoms
Loud metallic rattling noise from the rear of the engine
Engine management light illuminated
Loss of power or engine entering limp mode
Sudden engine seizure
Affected vehicles
Engines:
3.0d (N57 Diesel)
Typical mileage:
45000-160000 miles
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Engine/EmissionsHigh severity💬 7 owner reports, 2011 to 2018
Diesel Particulate Filter (DPF) failures are common, especially on cars used for repeated short journeys. A failing DPF can lead to increased back pressure, potentially damaging the turbocharger. Oil dilution due to failed regenerations is also reported.
Rough guide
£1000-2000
Typical symptoms
DPF warning light on dashboard
Loss of engine power or limp mode
Increased fuel consumption
Engine oil level rising (due to fuel dilution)
Affected vehicles
Engines:
All Diesels (N47 / N57)
Typical mileage:
80000-120000 miles
3 more owner reports back this up
January 2018A 2009 BMW E90 330d M Sport 245HP showed a high oil reading, possibly due to improper DPF regeneration or a full DPF.
March 2017A 2009 BMW E91 N47 320d with 191,000 miles displayed a DPF warning, but showed no reduction in power or fuel economy.
March 2017The DPF of a 2011 BMW N47 320d required replacement at 182,000 miles, having previously needed timing chain work twice.
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ElectricalHigh severity💬 4 owner reports, 2013
The Teves Mk 60 ABS/DSC (Dynamic Stability Control) control unit/pump is prone to failure, often indicated by the ESP warning light. This is typically age-related and can be an expensive replacement, though BMW may offer goodwill contributions for dealer-maintained cars. Specialist repair services are available as an alternative to full replacement.
Rough guide
£350-2170
Typical symptoms
ESP/DSC warning light illuminated on the dashboard
ABS warning light illuminated
Loss of traction control or ABS function
Intermittent warning lights, sometimes clearing after restart
Affected vehicles
Engines:
All
Typical mileage:
50000-100000 miles
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SuspensionHigh severity💬 3 owner reports, 2012 to 2013
The Active Steering system can develop a cold weather fault, requiring a new steering column. This is a very expensive repair, though BMW has been known to offer goodwill on 4-year-old cars, even those serviced independently. An Electronic Steering Lock (ELV) warning can also appear due to low voltage, sometimes inhibiting engine start.
Rough guide
£1750-2400
Typical symptoms
Active Steering warning light on dashboard
Stiff or unresponsive steering, especially in cold weather
Steering lock issues, preventing engine start
ELV (Electronic Steering Lock) warning in instrument cluster
Affected vehicles
Engines:
Active Steering equipped models
Typical mileage:
40000-80000 miles
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SuspensionMedium severity💬 6 owner reports, 2014 to 2015
Hairline cracks in alloy wheels, particularly 17-inch, 18-inch, and 19-inch wheels fitted with runflat tyres, are a well-known issue. This is often caused by impacts from potholes, speed cushions, and broken speed humps on UK roads. The only solution is often a replacement set of wheels.
Rough guide
£200-500 per wheel
Typical symptoms
Tyres losing pressure frequently
Vibration through the steering wheel or chassis
Visible cracks on the inner or outer rim of the alloy wheel
Uneven tyre wear
Affected vehicles
Engines:
All (especially with 17"+ wheels and runflat tyres)
Typical mileage:
30000-80000 miles
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Transmission/ClutchHigh severity💬 3 owner reports, 2015 to 2018
Dual Mass Flywheel (DMF) failures are increasingly common on manual diesel models, often accompanied by clutch issues. This can lead to severe judder, difficulty selecting gears, and eventually transmission failure.
Rough guide
£1000-2000
Typical symptoms
Severe judder or vibration when pulling away or changing gears
Difficulty selecting gears, especially reverse
Clutch slipping or feeling spongy
Unusual noises (clunking, rattling) from the gearbox area
Affected vehicles
Engines:
Manual Diesels
Typical mileage:
60000-100000 miles
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Transmission/ClutchMedium severity💬 3 owner reports, 2015 to 2016
Failure of reverse gear, often due to a failed baulk ring or synchromesh, is commonly reported on manual E90 models. BMW dealers often quote for a full gearbox replacement, but specialists can repair the issue for significantly less.
Rough guide
£850-3000
Typical symptoms
Inability to select reverse gear
Grinding noise when attempting to select reverse
Difficulty engaging other gears
Affected vehicles
Engines:
Manual Transmission
Typical mileage:
50000-80000 miles
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ElectricalMedium severity💬 4 owner reports, 2014 to 2018
Rusted ABS reluctor rings and/or loose ABS sensors on the rear driveshafts can cause intermittent Dynamic Traction Control (DTC) warning lights, accompanied by rapid and intermittent loss of power or juddering. BMW dealers may quote for expensive half-shaft replacements, but reluctor rings and sensors can often be replaced individually.
Rough guide
£200-700
Typical symptoms
DTC/ABS warning light flashing or illuminated
Intermittent loss of power or juddering motion
Car going into limp mode
Incorrect tyre pressure warnings
Affected vehicles
Engines:
All
Typical mileage:
50000-100000 miles
1 more owner report backs this up
June 2016A 2010 E90/E91 experienced dashboard errors for stability control, ABS, and tyre pressures, traced to a faulty ABS reluctor ring or sensor.
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Inlet manifold swirl flaps can break up and be ingested by the engine, leading to catastrophic engine damage and effectively writing off the car. Carbon build-up in the inlet manifold is also reported.
Rough guide
£2000-5000 (engine replacement)
Typical symptoms
Sudden engine failure or loud bang from engine
Engine management light illuminated
Rough running or misfires
Loss of power
Affected vehicles
Engines:
All Diesels
Typical mileage:
80000-120000 miles
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The N53 6-cylinder petrol engine is reported to suffer from cracked blocks and cylinder heads, leading to significant engine damage. This can be a known problem, with BMW sometimes offering contributions towards a new car if within an extended warranty period.
Rough guide
£4000-8000 (engine replacement)
Typical symptoms
Engine difficult to start
Excessive oil consumption
Overheating engine
Coolant loss without visible leaks
Affected vehicles
Engines:
3.0i (N53 6-cylinder Petrol)
Typical mileage:
70000-100000 miles
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Engine/EmissionsHigh severity💬 2 owner reports, 2017 to 2018
Oil pump failure is reported on the N57 diesel engine, which can lead to sudden oil starvation and catastrophic engine damage. The cost of a new oil pump can be a significant proportion of the car's value.
Rough guide
£2000-4000
Typical symptoms
Low oil pressure warning light
Loud knocking or grinding noises from the engine
Sudden engine seizure
Engine management light illuminated
Affected vehicles
Engines:
3.0d (N57 Diesel)
Typical mileage:
45000-60000 miles
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OtherMedium severity💬 4 owner reports, 2013 to 2016
Roof seals, particularly at the A-pillars, are prone to leaking on the E93 convertible. This can lead to water ingress into the boot, causing condensation and potential damage to electrical components in the battery compartment.
Rough guide
£300-2500
Typical symptoms
Water leaks around the A-pillars or into the boot
Condensation inside the boot
Damp carpets or upholstery
Electrical faults due to water ingress in the battery compartment
Affected vehicles
Engines:
All
Typical mileage:
30000-80000 miles
1 more owner report backs this up
March 2016Water pooling in the BMW E93 3-Series convertible battery compartment led to a £2,500 wiring replacement cost.
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What owners report on the E90 / E91 / E92 / E93
45 single reports, unconfirmed
One owner each, in their own words rewritten as a line, and not counted in our risk scoring. A fault joins the list above once a second report or an editorial source backs it.
Cooling · July 2018A BMW E93 320 M Sport convertible required replacement of its thermostat and electric water pump, costing over £900.
General · April 2018A 2011 BMW 3 Series E91 Touring experienced spontaneous combustion, leading to significant damage.
Engine · October 2017A 2009 BMW 320i Touring suffered a stretched timing chain, causing the Vanos system to jam, with an independent repair costing £2,376.
Electrics · October 2017A 2010 BMW E91 325i Touring required three replacement tyre pressure monitors, with a fourth unit now also faulty.
Gearbox and clutch · August 2017A 2009 BMW 318i Touring with 95,000 miles experienced a lack of reverse gear, a whining differential, and a rattling timing chain.
Electrics · July 2017Three TPMS wheel sensors failed over several years on a 2010 BMW E90 325, indicating a recurring issue.
Electrics · June 2017A 2008 BMW 335d owner was offered an 8-hour software update costing £125, but the nature of the update was unclear.
Cooling · August 2016A BMW E91 3-Series Touring severely overheated because the active grille shutter became stuck closed, blocking cooling air.
Cooling · August 2016A BMW E90 330d experienced carbon build-up and a water pump failure, requiring repairs to the cooling system.
Electrics · May 2016A 2011 320d experienced locking system faults, including incorrect door warnings and the car failing to stay locked after parking.
Engine · April 2016A 2010 E90 BMW 320d had its engine management light illuminate, with a dealer suggesting a decoke or EGR issue.
Engine · March 2016A 2010 BMW 320d Touring experienced failure of the crankshaft auxiliary pulley's bonding compound at 83,000 miles.
Gearbox and clutch · March 2016An E93 320d at 39,000 miles had its transmission warning light illuminate, with fluid appearing black and burned.
Engine · January 2016A 2010 E90 BMW 320d experienced turbo failure at 50,000 miles, with a replacement quoted at £1,552 including new oil pipes.
Engine · January 2016An 86,000 mile 330D required replacement of its water pump, EGR valve, inlet manifold, glowplugs, and glowplug controller unit.
Electrics · November 2015A satnav failure, quoted at £1,600 by a dealer, was potentially fixable for £250 by replacing only the laser disc reader.
Engine · October 2015A 2007 N57 petrol engine in an E91 3-Series Touring suffered timing chain failure at 160,000 miles, with BMW refusing liability.
Engine · October 2015A 2006 BMW 320i Touring with 49,000 miles experienced plastic timing chain guide failure on its N57 petrol engine, leading to £3,655 in repairs.
Engine · October 2015A 2007 N53 petrol engine in an E91 3-Series Touring suffered timing chain failure at 160,000 miles, with BMW refusing liability.
Engine · October 2015A 2006 BMW 320i N57 Touring at 49,000 miles had timing chain plastic guide failure, requiring extensive repairs costing £3,655.61.
Engine · October 2015An E92 335i coupe experienced the automatic gearbox 'banging' out of gear and engine stopping under hard acceleration.
Gearbox and clutch · September 2015A 2008 BMW 325i E90 M-Sport auto repeatedly entered limp mode after an hour of driving, locking into fourth gear.
Engine · August 2015The 3.0 litre N55 '335i' engine, despite winning awards, has been subject to a manufacturer recall.
Electrics · February 2015A 2010 E92 coupe had failed electrics, attributed to a junction box failure under the glovebox, costing £800.
Fuel system · May 2014A 72,000 mile 2008 BMW 320d experienced engine oil level rise due to excessive fuel introduction during DPF regeneration.
Electrics · April 2014A 2006 318i displayed a steering lock warning and would not start without wiggling the wheel at 36,000 miles; a software fix was available.
Gearbox and clutch · January 2014A 335i DCT model developed a minor oil leak from a transmission seal, requiring extensive engine and transmission removal for repair.
Engine · December 2013A 2009 BMW E92 320i coupe failed its MoT on emissions at 20,000 miles due to a timing chain fault.
Gearbox and clutch · August 2013A 2007 model with 64,000 miles exhibited a whining differential, which can be resolved by installing new bearings.
Engine · May 2013A 2007 320dSE Touring with 147,000 miles suffered a snapped crankshaft after an injector failed, causing hydraulic lock and engine destruction.
Suspension and steering · May 2013M Sport 225/45/R17 front tyres and 255/40/R17 rear tyres on one car lasted approximately 8,000 miles.
Engine · February 2013A 2006 320i suffered cylinder liner problems, resulting in excessive oil consumption and requiring engine repair.
Fuel system · November 2012A fuel leak was caused by an abraded vent pipe from the filler cap rubbing against the bodywork, costing £224 to repair.
Bodywork · September 2012Door lock failures are becoming increasingly common on this model, affecting vehicle security and access.
Electrics · August 2012The E Box containing the ECU can flood if its drain becomes blocked, leading to a £1,150 replacement cost for the unsealed ECU.
Suspension and steering · July 2012An August 2009 320d Business model required a complete suspension rebuild at two years old and later an i-Drive replacement.
Electrics · July 2012If a single bulb in the rear light cluster fails, the entire unit needs replacing for £120.93 plus labour charges.
Suspension and steering · July 2012An August 2009 320d Business model needed a complete suspension rebuild at two years old and an iDrive replacement.
Bodywork · May 2012A 2011 3-Series E90 experienced a problem with its boot lock mechanism, requiring attention.
Fuel system · May 2012A 135i/335i N55 model experienced an engine warning light, rough running, and limp mode, traced to a fuel injection valve.
Engine · May 2012A 2009 320i M Sport coupe experienced multiple issues including ignition coil failure, catalytic converter damage, and timing chain replacement.
Engine · January 2012A 2007 320 Si 4-cylinder engine suffered a cracked cylinder liner, leading to the car being off the road for months awaiting a replacement.
Engine · August 2011Four-cylinder petrol engines are prone to rocker box seals leaking oil, requiring replacement to prevent further issues.
Electrics · July 2011Wiring problems can cause doors to deadlock, the radio to lose codes, and indicators to lose their three-flash touch function.
Fuel system · January 2011A 2005 E90 330d had a fuel leak from a damaged overflow pipe, as diagnosed by a BMW dealer.
What owners like about the E90 / E91 / E92 / E93
3 notes
The BMW 3 Series achieved a 5-star NCAP occupant crash safety rating, demonstrating strong protection for occupants.
The M47TU2D20 2.0 litre diesel engine, installed between 2005 and 2007, has a reliable front-mounted timing chain.
The N54 335i engine was voted International Engine of the Year in 2007, highlighting its performance and engineering.
Generation 3 of 312 known faults · 30 owner reports · 9 good notes
BMW 3 Series F30 / F31 (2012 to 2019) problems
Engine/EmissionsHigh severity🏛️ Official recall
The exhaust gas recirculation (EGR) cooler cracks and leaks coolant into the hot exhaust gas stream, where the glycol deposits can ignite and set fire to the inlet manifold. DVSA recall R/2018/341 covers it in the plain words "The EGR cooler may leak presenting a fire risk", and it is one of the largest recalls in the UK, covering 225,449 vehicles. The recall work is free, but cars slip through: the fix has been revised more than once, and an unrepaired or early-repaired car is the risk. Outside the recall, a failed cooler plus manifold is a four-figure job
Rough guide
£0 (free safety recall)
Typical symptoms
loss of coolant with no obvious external leak
smell of burning from engine bay
engine bay fire
Affected vehicles
Engines:
2.0d (B47 Engine) / 3.0d (N57)
Typical mileage:
40000-100000 miles
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Engine/EmissionsHigh severity📝 Editorial
Plastic timing chain guides degrade, causing the oil pump drive chain to fail, leading to sudden oil starvation and engine seizure
Rough guide
£4000-7000
Typical symptoms
high-pitched whining noise from engine matching RPM
metallic rattle on cold start
sudden low oil pressure warning followed by engine failure
Affected vehicles
Engines:
2.0i / 2.8i (N20 Petrol)
Typical mileage:
50000-90000 miles
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Engine/EmissionsLow severity💬 Owner reports
Plastic turbo charge pipe becomes brittle and shatters under boost pressure
Rough guide
£200-350
Typical symptoms
loud pop during hard acceleration
immediate loss of power and limp mode
hissing sound of escaping boost
Affected vehicles
Engines:
3.0 Single Turbo (N55)
Typical mileage:
40000-80000 miles
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The N13 1.6 turbo petrol shares the timing chain weakness of its BMW stablemates but gets far less attention than the N47 diesel, so buyers rarely check for it. The chain, guides and tensioner wear early and typically announce themselves as drivetrain warnings and camshaft correlation fault codes rather than obvious noise. The engine is an interference design, so a chain that jumps bends the exhaust valves and turns a chain job into an engine rebuild. Chain work at a specialist is roughly 700-1500 pounds; valve damage takes it well beyond that
Rough guide
£700-2500
Typical symptoms
rattle from the front of the engine on cold start, sometimes for several seconds
drivetrain error message and engine management light
camshaft correlation fault codes stored
rough running or misfire once the chain has worn
Affected vehicles
Engines:
1.6 Turbo Petrol (N13) - 114i, 116i, 118i
Typical mileage:
50000-100000 miles
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Engine/EmissionsHigh severity💬 2 owner reports, 2017 to 2019
The oil pump drive gear in the N20 petrol engine is prone to premature wear, sending metal shrapnel into the engine and causing catastrophic damage or seizure. This can occur at relatively low mileages, even with regular servicing.
Rough guide
£5000-8000 (engine replacement)
Typical symptoms
Loud knocking or grinding noise from the engine
Sudden engine failure or seizure
Engine management light illuminated
Loss of oil pressure
Affected vehicles
Engines:
2.0i (N20 Petrol)
Typical mileage:
15000-50000 miles
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Transmission/ClutchHigh severity💬 3 owner reports, 2016 to 2018
Drivetrain judder and hesitation, particularly under acceleration in 3rd and 4th gear, is reported on xDrive models. This is often diagnosed as a faulty transfer box, potentially caused by a disparity in tyre wear or mismatched tyres.
Rough guide
£2000-3600
Typical symptoms
Judder or hesitation during acceleration, especially in 3rd and 4th gear
Vibration from the drivetrain
Roughness when cold or after long journeys
Engine management light illuminated
Affected vehicles
Engines:
xDrive models
Typical mileage:
30000-60000 miles
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Engine/EmissionsHigh severity💬 23 owner reports, 2018 to 2019
The Exhaust Gas Recirculation (EGR) cooler can leak glycol, leading to soot deposits that may smoulder, melt the intake manifold, and in some cases, cause the car to catch fire. This issue affects a large number of BMW diesel cars and was subject to multiple DVSA recalls (R/2018/258, R/2018/341).
Rough guide
£0 (free safety recall)
Typical symptoms
Engine management light illuminated
Drivetrain malfunction warnings
Loss of power or limp mode
Smell of burning plastic or smoke from engine bay
Affected vehicles
Engines:
All Diesels (4-cylinder and 6-cylinder)
Typical mileage:
30000-80000 miles
3 more owner reports back this up
January 2019A BMW 3 Series Touring could not be released after a service due to two EGR recalls and a lack of repair parts.
January 2019A BMW F31 3-Series Touring was held by a dealer due to EGR Cooler fire risk recalls and unavailable parts, causing inconvenience.
November 2018A November 2016 BMW 320d repeatedly displayed a 'Drivetrain malfunction' warning, leading to an EGR replacement.
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ElectricalHigh severity💬 8 owner reports, 2017 to 2019
The KLE (Charge Control Unit) in the 330e PHEV models is prone to repeated failures, causing charging problems and tripping domestic circuit breakers. BMW is aware of the problem but has experienced difficulties providing a permanent solution, leading to production cessation of the 330e in July 2018.
Rough guide
£1000-2000
Typical symptoms
Car fails to charge when plugged in
Tripping of domestic circuit breakers when attempting to charge
'Battery Not Charging' error message
Noisy cooling fan running at maximum speed during charging
Affected vehicles
Engines:
330e PHEV
Typical mileage:
20000-45000 miles
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Transmission/ClutchHigh severity💬 3 owner reports, 2015 to 2019
Dual Mass Flywheel (DMF) and clutch failures are reported on manual F30/F31 models, even at relatively low mileages. This can lead to severe judder and difficulty selecting gears.
Rough guide
£2500-3000
Typical symptoms
Severe judder or vibration when pulling away or changing gears
Difficulty selecting 1st, 2nd, and reverse gears
Heavy clutch action
Unpleasant shudder during stop/start operation
Affected vehicles
Engines:
Manual Transmission
Typical mileage:
29000-42000 miles
1 more owner report backs this up
October 2017A 2013 BMW 320d at 42,500 miles had difficulty selecting third and fourth gears, with a dealer quoting £3,000+ for DMF replacement.
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OtherMedium severity💬 2 owner reports, 2017 to 2018
The air conditioning condenser is prone to stone damage, leading to refrigerant leaks and loss of cooling. This is a common issue that can result in an expensive repair.
Rough guide
£750-1000
Typical symptoms
Air conditioning not blowing cold air
Hissing sound from the front of the car when AC is on
Visible damage to the condenser through the front grille
Affected vehicles
Engines:
All
Typical mileage:
20000-50000 miles
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Transmission/ClutchHigh severity📝 Editorial
The xDrive transfer box can develop a judder or hesitation, often linked to disparities in tyre wear or mismatched tyres (more than 3mm difference in circumference). This can lead to expensive transfer box replacement.
Rough guide
£2000-4000
Typical symptoms
Judder or hesitation during acceleration, especially in 3rd and 4th gear
Vibration from the driveline
Shuddering when decelerating at certain speeds
Affected vehicles
Engines:
All xDrive models
Typical mileage:
30000-60000 miles
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Transmission/ClutchMedium severity📝 Editorial
Premature failure of the clutch and/or dual mass flywheel (DMF) on manual transmission models, leading to difficult gear changes, judder, or complete clutch failure.
Rough guide
£1500-3000
Typical symptoms
Notchy gearchange, especially in 1st, 2nd, and reverse
Heavy clutch action
Severe clutch judder, particularly when warm or at low speeds
Shudder through the car when stop/start activates
Affected vehicles
Engines:
Manual transmission (e.g., 320i, 320d)
Typical mileage:
29000-45000 miles
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What owners report on the F30 / F31
30 single reports, unconfirmed
One owner each, in their own words rewritten as a line, and not counted in our risk scoring. A fault joins the list above once a second report or an editorial source backs it.
Electrics · December 2022A 2018 BMW 320d xDrive at 28,000 miles experienced TCB battery failure, requiring significant labour to replace.
Suspension and steering · September 2019A 2017 BMW 335d at 35,000 miles displayed a 'Driver Stabilisation' warning, with steering locking to limited travel.
Fuel system · September 2019A 2016 BMW 330e had issues with its fuel filler flap not always opening, possibly due to a blocked charcoal filter.
Fuel system · July 2019A 2016 BMW 320i manual at 14,075 miles experienced a fuel pump issue, likely involving the low pressure fuel pump.
Engine · December 2018A 2014 BMW 320i GT X Drive required a replacement engine and turbocharger at 43,000 miles; parts were free, but fitting cost £3,700.
Brakes · October 2018A BMW 330d Touring required front brake disc replacement at 40,000 miles, indicating premature wear.
Brakes · October 2018A BMW F31 330d Touring needed its front brake discs replaced at 40,000 miles, suggesting early wear.
Interior · September 2018A 2017 BMW 330E saloon developed a 'resonance rattle' from the upper steering column area on coarse road surfaces.
Electrics · September 2018A March 2016 BMW 3 Series Touring repeatedly flashed warnings for stability, brake, and airbag problems, requiring dealer attention.
Electrics · September 2018A March 2016 BMW F31 3-Series Touring at 10,500 miles repeatedly displayed stability, brake, and airbag warnings, leading to FEM unit replacement.
Engine · August 2018A 50,000 mile 2014 BMW 320d had its engine management light on, revealing a burnt-through plastic inlet manifold.
Electrics · July 2018A 2014 BMW 330d Touring at 10,000 miles experienced recurring Tyre Pressure Monitor (TPM) warnings.
Gearbox and clutch · February 2018A 2013 BMW 320 automatic experienced transmission failure at 92,000 miles, requiring significant repair.
Electrics · January 2018A 2016 BMW 335d, bought as an ex-demo, had major electrical issues that required extensive garage visits over seven weeks.
Electrics · July 2017A 2014 BMW 320d xDrive at 25,000 miles suffered starter motor and battery failure, costing £850 to fix independently.
Engine · June 2017A 2012 BMW 320i at 34,000 miles developed a 'tinkling noise' from the engine, and swarf was found upon stripping it down.
Suspension and steering · April 2017A BMW 320 GT experienced twelve punctured runflat tyres by 57,000 miles.
Engine · January 2017A BMW 320i at 50,000 miles had a noisy engine, with the dealer suggesting that the injectors were the cause.
Engine · January 2017A 2017 F30 BMW 320i with an N20 engine at 50,000 miles had a noisy engine, with the dealer suggesting injector issues.
Cooling · October 2016A December 2016 BMW 3 Series had a problem with its automatic radiator vent system, caused by a piece of polystyrene.
Gearbox and clutch · October 2016A 33,000 mile 2013 BMW 320 ED produced a severe jolt when stopping, which BMW stated was a 'characteristic' rather than a fault.
Gearbox and clutch · September 2016A 2012 328i auto at 40,000 miles developed a 'groaning noise' from the transmission, especially when changing gears.
Suspension and steering · May 2016A used 2013 328i experienced severe driveline vibration, eventually traced to a faulty driveshaft after other parts were changed.
Engine · May 2016A buyer of a 43,000 mile 2012 BMW 328i discovered it had only received one oil change at 28,000 miles.
Electrics · May 2016The driver's window of a BMW 320d GT dropped during heavy rain, possibly due to moisture affecting the door's locking ECU.
Engine · April 2016A recently purchased 2012 BMW 320i auto had a tappet or ticking noise from the engine, most noticeable at lower speeds.
Engine · April 2016A recently purchased 2012 BMW 320i auto with an N20 engine developed a tappet or ticking noise, most noticeable at lower speeds.
Gearbox and clutch · July 2015A 2013 320d Luxury (184PS) shuddered when decelerating from 75 to 65 mph, specifically within that speed range.
Bodywork · April 2014A 2013 BMW 3 Series 320 xDrive model developed an issue with significant wind noise emanating from the cabin while travelling.
Engine · January 2014A BMW 328i M Sport experienced repeated 'drive train malfunction' faults, leading to the car's rejection.
What owners like about the F30 / F31
9 notes
The model achieved a Euro NCAP 5 Star Crash Safety Rating, with high scores for adult and child occupant protection.
The four-cylinder 328i TwinPower Turbo engine was recognised in the 2.0 litre category of the International Engine of the Year awards in 2012.
The car provides an excellent driving experience due to its precise steering feel and balanced handling characteristics.
Increased rear seat dimensions allow two adults to sit comfortably in the back of this 3 Series model.
The 320d EfficientDynamics model delivers strong performance, good fuel economy, and low emissions.
All-wheel drive is available as an option with popular engine choices, enhancing traction in various weather conditions.
The panoramic 'Professional' navigation system in the 3 Series has improved postcode location accuracy compared to previous models.
The model offers more practical boot space than a standard 3 Series, featuring an electric hatch opening as standard.
The car features an attractive design, considered superior to the larger 5 Series GT model.
BMW 3 Series service intervals: cambelt, chain and gearbox oil
An overdue cambelt is the most expensive thing a seller can fail to mention on a used 3 Series. These are the figures UK specialists work to.
Timing chainChain
2.0D, N47
No fixed replacement interval
Chain driven (rear of engine). N47 is notorious for chain stretch and snapping. Listen for a scraping/rattling noise from the rear of the engine.
Automatic gearbox oil
8-SPEED, 6-SPEED
60,000 miles or 8 years, whichever comes first
BMW claims the ZF gearbox is 'sealed for life', but ZF themselves (the manufacturer) prescribe fluid and filter changes. Published figures range from ZF's 100,000 km / 8 years guidance to specialist advice of 70,000-80,000 miles; 60,000 miles is recorded as the conservative end of that range.
Always confirm against the vehicle handbook. Intervals vary by engine, and several manufacturers revised theirs after failures in service.
Repair costs are typical UK ranges, not quotes. Actual cost depends on condition and garage.Data last verified: September 2026
BMW 3 Series buying questions
Is a used BMW 3 Series reliable?
The BMW 3 Series has 44 known faults in our database across 3 generations, 30 of them rated high severity. The most serious are engine (the Exhaust Gas Recirculation (EGR) cooler can leak glycol) and engine (screws for the housing of the variable camshaft timing). None of them makes the car a bad buy on its own; the risk is a seller who knows and says nothing.
What are the most common BMW 3 Series problems?
Three stand out. Engine: the Exhaust Gas Recirculation (EGR) cooler can leak glycol (typically 30000 to 80000 miles). Engine: screws for the housing of the variable camshaft timing (VANOS) adjustment unit can loosen or break. Engine: the N53 6-cylinder petrol engines are prone to repeated failures of ignition coils, fuel injectors (typically 30000 to 80000 miles). The full list above is grouped by generation, with typical mileage and a rough repair cost for each.
Which BMW 3 Series years should I avoid?
No BMW 3 Series year is a write-off, but the E90 / E91 / E92 / E93 (2005 to 2012) carries the most serious faults: engine, electrics, fuel system, suspension and gearbox. The F30 / F31 (2012 to 2019) and E46 (1998 to 2005) have high-severity faults on record too. Year matters less than whether the specific car has had the known fixes, so check the history for them.
What should I check when viewing a used BMW 3 Series?
Ask the seller about the engine faults on this page and whether they have been fixed, with invoices. On the test drive watch for engine management light illuminated, engine emergency mode activated and engine misfires, rough idle, or hesitation under acceleration. Read the MOT history for repeat advisories, then paste the advert into the free check, which reads it against all 44 known faults before you travel. Check a BMW 3 Series advert →
What is the real MPG of a BMW 3 Series?
Owners report 42.9 mpg on average across the BMW 3 Series engines with data, about 80% of the official combined figure. The gap between official and real-world economy varies a lot by engine, so the Real MPG page lists every engine and generation separately, from 11,570 owner submissions. BMW 3 Series Real MPG by engine →
If you used to check the Honest John “Good & Bad” section before the site closed in 2026, this page is where that information now lives. We rebuilt the BMW 3 Series owner-report history from the archived Honest John dataset, added our own research, specialist and owner-club sources and DVSA recall data, and we keep it free. Each fault above is badged with its source. The same data feeds our free advert check, which reads a listing against every known fault for the exact engine and year.
Knowing what a BMW 3 Series goes wrong with is half of it. The rest is reading the advert and checking the car's history before you hand any money over.