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Known Faults Database

Ford Fiesta Common Problems & Known Faults (UK)

If you are considering buying a used Ford Fiesta, there are several major reliability issues worth knowing about first. Our garage database tracks 17 known faults for this model, 12 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 42 known faults

Ford Fiesta Mk4 / Mk5 (1995 to 2002) problems

Engine/EmissionsMedium severity📝 Editorial

The 1.3 'Endura' pushrod engine is prone to cam follower wear, leading to tappety noises. Spark plugs can corrode into the head or be overtightened, requiring head removal to drill them out. These issues indicate significant internal engine wear.

Rough guide
£400-800

Typical symptoms

  • Loud tappety noise from engine, especially on cold start
  • Difficulty removing spark plugs
  • Rough running or misfires
  • High oil consumption

Affected vehicles

Engines:
1.3 Endura-E (pushrod)
Typical mileage:
60000-100000 miles
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Engine/EmissionsHigh severity📝 Editorial

Zetec S engines (1.25, 1.4, 1.6) are sensitive to incorrect oil (must be 5W-30). Using the wrong oil (e.g., 20W-50) leads to sticking valves, blocked oil passages, oil starvation, and cam wear, potentially causing severe engine damage.

Rough guide
£1000-2500+

Typical symptoms

  • High oil consumption
  • Smoky exhaust
  • Tappety noises or engine rattles
  • Reduced engine performance or misfires

Affected vehicles

Engines:
1.25, 1.4, 1.6 Zetec S engines
Typical mileage:
Any mileage with incorrect oil miles
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End of the Mk4 / Mk5 section.Pick another year ↑Check a Ford Fiesta advert →
Generation 2 of 44 known faults · 5 owner reports

Ford Fiesta Mk6 (2002 to 2008) problems

Fuel SystemHigh severity💬 3 owner reports, 2013 to 2017

The 1.4 TDCI engine, particularly with Siemens SID804 or SID802 common rail injection, is prone to injector seal failures and broken fuel pipes. This can lead to fuel leaks, loss of power, and limp home mode.

Rough guide
£500-1200

Typical symptoms

  • Engine losing power or going into limp home mode
  • Fuel smell in the cabin or around the engine
  • Rough running or misfires
  • Powertrain warning light (cog with exclamation mark)

Affected vehicles

Engines:
1.4 TDCI (Siemens SID804/SID802)
Typical mileage:
50000-100000 miles
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Transmission/ClutchHigh severity💬 3 owner reports, 2013

The ASM Module and gear actuators of the 1.4 'Durashift' automated manual transmission are prone to failure after 4-5 years, leading to loss of drive. Repairs are very expensive, often costing £1,200-£1,600.

Rough guide
£1200-1600

Typical symptoms

  • Loss of 'drive' or inability to select gears
  • Transmission warning lights on dashboard
  • Jerking or clunking during gear changes
  • Car refusing to move

Affected vehicles

Engines:
1.4 Durashift automated manual
Typical mileage:
40000-80000 miles
1 more owner report backs this up
  • November 2013The Durashift automated manual transmission motors on a 2003 Fiesta failed at 24,000 miles in 2006, costing £440, and again at 52,000 miles in 2013.
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Engine/EmissionsHigh severity💬 2 owner reports, 2011 to 2012

The 1.6 TDCI (DV6) engine is highly prone to turbocharger failure due to oil feed pipe blockages caused by carbonised oil. This requires not just a new turbo, but also new oil pipes, pump, and pick-up, with parts alone costing around £1,200.

Rough guide
£1500-2500+

Typical symptoms

  • Loss of engine power
  • Loud growling or whining noise from the engine bay
  • Blue or white smoke from the exhaust
  • Engine warning light illuminated

Affected vehicles

Engines:
1.6 TDCI (DV6)
Typical mileage:
50000-100000 miles
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ElectricalMedium severity📝 Editorial

Widespread problems with EAC (electronic accelerator control) failures on 1.25 and 1.4 petrol engines. Diagnostics often show a throttle position sensor ratio error, potentially due to corrosion in connectors. This can lead to loss of power.

Rough guide
£300-600

Typical symptoms

  • ECU light coming on
  • Loss of engine power
  • Engine going into limp home mode
  • Throttle position sensor error codes

Affected vehicles

Engines:
1.25 and 1.4 petrol engines
Typical mileage:
60000-100000 miles
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What owners report on the Mk6

5 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.

  • Engine · December 2017The main bearings of a 2006 Fiesta 1.4 petrol engine failed at 80,000 miles, despite consistent servicing.
  • Electrics · June 2017A 2006 Fiesta experienced a sticking speedometer in hot weather, even after a dashboard cluster replacement in 2015 for similar issues.
  • Electrics · January 2016A 2006 Fiesta 1.4 TDCI had a wiring issue causing the battery light to illuminate, followed by multiple warning lights and accelerator failure, requiring a new management system.
  • Electrics · November 2013An instrument panel fault, possibly linked to a speed sensor oil seal, caused multiple warning lights, an inoperative speedometer, and a static mileometer.
  • Brakes · December 2011The ABS module on a 2006 Fiesta Studio failed, requiring repair or replacement.
End of the Mk6 section.Pick another year ↑Check a Ford Fiesta advert →
Generation 3 of 410 known faults · 43 owner reports · 29 good notes

Ford Fiesta Mk7 (2008 to 2017) problems

CoolingHigh severity📝 Editorial

The nylon coolant degas hose goes brittle with heat cycling and cracks or snaps, often at speed. The 1.0 EcoBoost carries very little coolant and runs high thermal loads, so it can empty in seconds and warp the alloy cylinder head before the temperature gauge tells the driver anything - the failure owners nicknamed "EcoBoom". Ford issued a revised hose and degas bottle design and carried out the work as a service action, NOT as a DVSA safety recall, so it does not appear on the GOV.UK recall checker and many cars were never done

Rough guide
£1000-3000

Typical symptoms

  • sudden loss of coolant
  • temperature gauge spiking
  • cracked cylinder head

Affected vehicles

Engines:
1.0 EcoBoost
Typical mileage:
40000-70000 miles
1 more owner report backs this up
  • August 2018A 2013 Ford Fiesta 1.0 EcoBoost suffered a degas pipe failure, leading to a consequential cylinder head gasket failure.
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SteeringLow severity💬 Owner reports

Steering column joint knock and lower intermediate shaft wear

Rough guide
£150-300

Typical symptoms

  • knocking sound over bumps
  • play in steering wheel
  • clunking when turning wheel at low speeds

Affected vehicles

Engines:
All
Typical mileage:
40000-80000 miles
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Engine/EmissionsHigh severity💬 2 owner reports, 2018 to 2019

The 1.6 EcoBoost engine in the Fiesta ST is subject to a safety recall (R/2018/008) due to localized overheating that can cause the cylinder head to crack. This may lead to a pressurized oil leak and, in extreme circumstances, an engine compartment fire. The fix involves inspecting the engine and cooling system, replacing affected components, and fitting a coolant level sensor with associated software.

Rough guide
£0 (free safety recall)

Typical symptoms

  • Coolant loss or engine overheating
  • Pressurized oil leak
  • Engine compartment fire (extreme cases)
  • Engine warning lights

Affected vehicles

Engines:
1.6 EcoBoost
Typical mileage:
Any mileage miles
1 more owner report backs this up
  • February 2019A 2014 Fiesta ST2 1.6 Ecoboost suffered engine failure at 35,000 miles due to very low compression in cylinder 1, with an estimated £7,200 replacement cost.
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Fuel SystemHigh severity💬 3 owner reports, 2014 to 2017

Injector failure is common on the 1.6 TDCI engine, often leading to starting problems, loss of power, and limp home mode. Replacing all four injectors can cost around £1,200.

Rough guide
£1000-1200

Typical symptoms

  • Difficulty starting the engine
  • Engine losing power or going into limp home mode
  • Rough idling or misfires
  • Powertrain warning light (cog with exclamation mark)

Affected vehicles

Engines:
1.6 TDCI
Typical mileage:
60000-100000 miles
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Engine/EmissionsHigh severity💬 2 owner reports, 2014 to 2016

Timing belt failure reported on the 1.6 TDCI engine, often leading to catastrophic engine damage. In one case, an ancillary belt came off and wrapped around the timing belt, causing it to jump teeth.

Rough guide
£2000-5000+

Typical symptoms

  • Sudden loss of engine power
  • Loud bang or grinding noise from engine
  • Engine refusing to start
  • Engine warning lights

Affected vehicles

Engines:
1.6 TDCI
Typical mileage:
80000-120000 miles
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ElectricalMedium severity💬 2 owner reports, 2016 to 2019

Heater/blower fan motors commonly fail, often only working on the highest setting (speed 4). This is usually due to the fan motor itself failing, possibly from water ingress, rather than just the resistor pack. Replacing only the resistor without checking the motor can be a fire risk.

Rough guide
£300-600

Typical symptoms

  • Heater fan only works on maximum speed (setting 4)
  • No airflow from vents on lower settings
  • Intermittent fan operation

Affected vehicles

Engines:
All
Typical mileage:
60000-100000 miles
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Engine/EmissionsHigh severity💬 3 owner reports, 2016 to 2018

Exhaust valve burnout, particularly on cylinder 3, is reported on the 1.25 petrol engine. This can be caused by faulty spark plugs or the engine running too lean, leading to significant engine repair bills.

Rough guide
£1000-1500

Typical symptoms

  • Engine misfire or rough running
  • Loss of engine power
  • Engine warning light illuminated
  • Poor fuel economy

Affected vehicles

Engines:
1.25 petrol
Typical mileage:
35000-50000 miles
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Transmission/ClutchHigh severity💬 15 owner reports, 2014 to 2018

The 6-speed dry clutch Powershift automatic transmission is highly problematic, suffering from oil seal failures that leak fluid onto the clutch pack, leading to juddering, loss of drive, and eventual clutch pack failure. Ford has faced class-action lawsuits over this globally. Repairs are very expensive, often requiring new clutch packs and sometimes entire gearboxes.

Rough guide
£1500-5000+

Typical symptoms

  • Juddering or shuddering on acceleration, especially at low speeds or from a standstill
  • Hesitation or delay in gear changes
  • Loss of drive or inability to select gears (especially reverse)
  • Transmission warning lights on dashboard

Affected vehicles

Engines:
1.0 EcoBoost / 1.6 petrol Powershift dry clutch automatic
Typical mileage:
15000-80000 miles
11 more owner reports back this up
  • October 2022A 2015 Fiesta automatic experienced Powershift gearbox problems at 43,000 miles, with a 'transmission failure' warning light appearing.
  • January 2020The Powershift dry clutch transmission of a 2014 Fiesta failed at 21,000 miles, displaying a 'Transmission malfunction, service now' message, with a £1,500 repair quote.
  • August 2019A 2016 Fiesta 1.6 Powershift displayed a 'Transmission Fault book-in with Ford Service' warning message on the dashboard at 6,000 miles.
  • August 2019A 2015 Fiesta 1.6 Powershift displayed a powertrain warning on the rev counter, likely indicating a failing dual clutch.
  • May 2019The Powershift transmission of a 2014 Fiesta failed at 22,000 miles, developing a high-pitched whining noise, with a new transmission quoted at £4,500.
  • October 2018A 2014 Fiesta EcoBoost Powershift developed a transmission fault at 50,000 miles, causing jerky driving and loss of reverse, eventually needing a new gearbox.
  • September 2018Two 2016 Ford Fiesta 1.0 EcoBoost Powershift models exhibited shuddering when accelerating from a standstill.
  • July 2018The Powershift transmission on a 2014 Ford Fiesta 1.0 EcoBoost with 12,000 miles developed a whine and slipping clutch sensation.
  • June 2018A Ford Fiesta 1.6 Powershift experienced a second clutch pack failure at 22,500 miles, causing low-speed judder on acceleration.
  • June 2018A 2013 Fiesta Powershift experienced a second oil seal and clutch pack malfunction, costing £957 for repair, with Ford declining financial aid.
  • August 2017A 2012 Fiesta 1.6 experienced issues with its Powershift transmission, indicating a fault with the automatic gearbox.
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Transmission/ClutchMedium severity💬 4 owner reports, 2014 to 2019

The clutch slave cylinder on 1.0 EcoBoost manual models is prone to failure, leading to a stiff clutch pedal, difficulty engaging gears, or complete clutch failure. This can also be linked to premature clutch wear.

Rough guide
£400-800

Typical symptoms

  • Stiff or heavy clutch pedal
  • Difficulty engaging gears, especially first or reverse
  • Clutch slipping or grinding noises
  • Clutch pedal feeling very light or losing pressure

Affected vehicles

Engines:
1.0 EcoBoost (manual)
Typical mileage:
30000-60000 miles
1 more owner report backs this up
  • August 2018A used 2014 Ford Fiesta 1.0 EcoBoost required a new clutch assembly, cylinder assembly, gasket, and antifreeze within three days of purchase.
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Transmission/ClutchHigh severity💬 3 owner reports, 2013 to 2017

Premature clutch and Dual Mass Flywheel (DMF) failure is reported on Fiesta ST models, sometimes at very low mileages. This can be expensive to replace, with dealers often blaming driver abuse.

Rough guide
£800-1500

Typical symptoms

  • Clutch slip, especially under hard acceleration
  • Juddering or vibration when engaging the clutch
  • Difficulty changing gears
  • Loud knocking or rattling from the gearbox area

Affected vehicles

Engines:
1.6 EcoBoost (manual)
Typical mileage:
3000-40000 miles
1 more owner report backs this up
  • December 2018A 2014 Ford Fiesta experienced dual mass flywheel failure at 37,000 miles, with the replacement costing the owner £900.
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What owners report on the Mk7

43 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.

  • Engine · November 2021A 2016 Fiesta 1.0 EcoBoost suffered cam belt failure, with the dealer offering £1,100 towards the £7,000 cost of a replacement engine.
  • Cooling · April 2021Corrosion was found on the metal turbo coolant return pipe of a 2017 Fiesta EcoBoost, with the main dealer advising a complete turbo unit replacement.
  • Cooling · October 2020A 2013 EcoBoost Fiesta with 11,945 miles experienced coolant loss due to a failed O-ring seal behind the timing belt cover, costing £1,650 to repair.
  • Engine · December 2019A 2015 Fiesta 1.0 Ecoboost experienced engine pinking, which was eventually resolved by replacing a dirty air filter that contained a sensor.
  • Electrics · December 2019A Fiesta Powershift required four replacement brake pedal switches and a new clutch pack, but the garage could not reprogram the system.
  • Gearbox and clutch · November 2019A 2017 Fiesta experienced dual mass flywheel failure at 17,000 miles, requiring replacement.
  • Engine · October 2019A 45,000-mile Fiesta 1.0 EcoBoost had multiple issues, including lambda sensor faults, a new catalytic converter, and a failed mass airflow sensor.
  • Gearbox and clutch · September 2019A 2016 Fiesta ST3 developed an intermittent knocking noise from the transmission when changing gear, particularly from first to second.
  • Gearbox and clutch · July 2019A 2016 Fiesta 1.0 EcoBoost IB5 manual experienced clutch and transmission failure at 42,000 miles, becoming stuck in fourth gear.
  • Engine · March 2019A 2015 Fiesta 1.0 Ecoboost at 27,500 miles had a coil spring failure, followed by a 'service engine now' warning and limp mode due to a fuel pump internal error.
  • Bodywork · February 2019A 2013 Ford Fiesta developed early rusting at the lower sections of the wheel arches, which the manufacturer attributed to stone chip damage.
  • Gearbox and clutch · February 2019The clutch of a September 2016 Fiesta Zetec failed at 26,000 miles, requiring replacement.
  • Gearbox and clutch · February 2019A 2016 Fiesta 1.0 EcoBoost slipped out of reverse gear, with the dealer suggesting it was due to the clutch pedal being pressed too far.
  • Engine · February 2019A 2016 Fiesta 1.0 EcoBoost had multiple issues, including kangarooing, a new battery after 18 months, an oil leak requiring a new head gasket, and a replaced engine management sensor.
  • Gearbox and clutch · January 2019A 2008 Fiesta 1.25 experienced clutch judder at 68,000 miles, more noticeable in cold, wet weather and when the engine was cold.
  • Engine · January 2019A 2013 Fiesta 1.0L Ecoboost experienced a loose nut in the turbo, which led to the destruction of the turbocharger.
  • Gearbox and clutch · December 2018The 4-speed torque converter automatic transmission of a 2012 Fiesta Titanium failed at 54,000 miles, with a repair cost of £1,290.
  • Electrics · November 2018The ignition lock on a 2015 Ford Fiesta failed just after its three-year warranty expired, requiring replacement at the owner's expense.
  • Engine · September 2018A 2013 Ford Fiesta 1.0 EcoBoost suffered engine failure twice; the first replacement was under warranty, but the second was refused.
  • Cooling · September 2018A 2016 Ford Fiesta 1.0T EcoBoost experienced a coolant leak from its engine.
  • Exhaust · September 2018A 2015 Ford Fiesta with 41,000 miles initially failed its MOT emissions test but passed after extensive work.
  • Suspension and steering · August 2018A rear coil spring failed on a 2015 Ford Fiesta 1.0T EcoBoost, four months out of warranty, with the dealer refusing a goodwill claim.
  • Gearbox and clutch · July 2018A 2011 Fiesta 1.4 with a 4-speed torque converter automatic transmission lost power, requiring the driver to restart the engine to continue.
  • Cooling · June 2018A 2014 Ford Fiesta 1.0 EcoBoost had a small coolant leak found during its fourth-year MOT, traced to an internal engine issue.
  • Engine · May 2018A used Ford Fiesta EcoBoost required a new engine, costing over £5,000, after starting problems at 30,000 miles.
  • Gearbox and clutch · May 2018The drivetrain of a 2016 Ford Fiesta 1.0 EcoBoost slipped when reversing, leading to a dual mass flywheel replacement under warranty.
  • Electrics · February 2018A September 2013 Ford Fiesta 1.25 experienced battery drain due to a failed cell and a problem with the passenger window electrics.
  • Gearbox and clutch · February 2018A driveshaft failed on a 2015 Ford Fiesta 1.0T EcoBoost at 30,000 miles, making it difficult to engage gears.
  • Electrics · January 2018A September 2013 Ford Fiesta 1.25 had battery drain issues, with a parasitic draw of 1.5 amps and the centre display activating.
  • Engine · September 2017A 2010 Fiesta 1.4 TDCI experienced stuttering, hesitation, and missing after the engine was thoroughly warm, possibly indicating an injector fault.
  • Exhaust · April 2016A 2011 Fiesta diesel, used for driving instruction, emitted fumes into the cabin, possibly due to EGR or DPF problems from stop/start use.
  • Engine · March 2016A 2010 Fiesta 1.4 TDCI entered limp home mode with a warning light, showing soot around the filter box, suggesting a choked EGR.
  • Engine · November 2015A spark plug in a 2012 Fiesta 1.25 broke apart, leading to engine destruction; Ford denied liability as the car was overdue for its service.
  • Interior · August 2015The air conditioning system failed on a 2010 Fiesta at 44,000 miles, with an estimated repair cost exceeding £600.
  • Engine · May 2015A 2008 Fiesta 1.6 diesel experienced EGR failure at 60,000 miles, and also had failing front wheel bearings.
  • Electrics · October 2014The cruise control system failed on a 2010 Fiesta Titanium 1.4 Automatic at 14,722 miles, costing £84 for diagnosis and £190 for replacement.
  • Engine · September 2014A high-mileage 2011 Fiesta 1.4 TDCI, used as a driving school car, sporadically lost engine power and had the engine fan activate, likely due to DPF regeneration.
  • Brakes · August 2014A 2013 Fiesta 1.25 82PS experienced warped front brake discs at 21,250 miles.
  • Interior · May 2014The driver's seatbelt in a 2010 Fiesta 1.6 diesel locked at 29,000 miles, requiring replacement.
  • Fuel system · April 2014A 2012 Fiesta 1.4 TDCI in Cyprus repeatedly showed a 'fuel in oil' light, possibly due to faulty injectors or DPF regeneration issues.
  • Engine · December 2013A spark plug failed at 39,000 miles on an independently serviced Fiesta, where the plugs were not replaced at the third service, causing engine damage.
  • Bodywork · December 2013The top part of the door seal on 2008 to 2010 three-door models is prone to becoming unglued.
  • Suspension and steering · October 2013A front suspension arm snapped on a 2010 Fiesta at 32,000 miles, requiring repair.

What owners like about the Mk7

29 notes
  • The original Fiesta model is compact, measuring 11 feet 8 inches long by 5 feet 2 inches wide, with a weight between 700kg and 800kg.
  • This model offers low insurance groups, making it an inexpensive and straightforward vehicle to own.
  • The 'Valencia' pushrod engines are durable if the cars are driven regularly, with readily available and affordable spare parts.
  • Engine options included a 957cc unit with 40bhp, an 1,117cc with 53bhp, a 1,298cc with 65bhp, and a 1,598cc ohv XR2 from 1981 to 1983.
  • This Fiesta model remains suitable for owners who prefer to carry out their own maintenance and repairs.
  • The 1983 facelifted Fiesta offers low insurance groups and simple mechanics, with durable 'Valencia' pushrod engines if driven regularly.
  • Engine choices included 957cc (40bhp), 1,117cc (53bhp), 1.3 ohc CVH (69bhp), 1,392cc ohc CVH (74bhp), and a 1,592cc ohc CVH in the XR2 (96bhp).
  • A 54bhp 1.6 diesel engine was available, along with an automatic option; the CTX CVT automatic could be reliable in 1984 to 1989 models.
  • This generation of Fiesta was a larger, improved model, showing design influences similar to the Peugeot 205.
  • The car measures 12 feet 3 inches long by 5 feet 3 inches wide, weighing between 770kg and 895kg, with basic models often performing best.
  • Engine options ranged from a 999cc (45bhp) to a 1,596cc CVH, producing up to 133bhp in the Fiesta RS Turbo.
  • The diesel engine was a 1,753cc unit with 60bhp, a design that continued in some Ford models until 2010.
  • A 1989 Fiesta 1.3 litre model was equipped with power steering, enhancing the driving experience.
  • A 1989 Fiesta 1.0 litre car, without a catalytic converter, proved inexpensive to buy, insure, and operate.
  • This model continued production as the Fiesta Classic until January 1997, alongside a newer, more expensive Fiesta.
  • The Fiesta saloon, available from November 2006, is a robust, Indian and Australian-built version with 1.6 Duratec or 1.4 TDCI engines.
  • The Ford Fiesta van offers an excellent driving experience, characterised by agile handling, precise steering, and a comfortable ride.
  • The engine range is robust, with the Econetic model providing an optimal balance of performance and fuel efficiency.
  • The load bay capacity is competitive within its class, offering more space between the wheel arches than many rivals.
  • The Fiesta 4-door saloon (Verve saloon) was equipped with a 1.6 engine and a 6-speed Powershift transmission.
  • The TDCi engines are excellent, offering strong, quiet, and economical performance, with the 1.5 dCi unit being particularly recommended.
  • The high-quality interior ensures it feels more like a car than a van, with comfortable seats and an excellent driving position.
  • All models include a trip computer, a CD stereo with iPod connectivity, and remote audio controls as standard features.
  • The Fiesta achieved a five-star Euro NCAP rating, with high scores for adult and child protection, and good safety assist.
  • Fiesta 1.0 EcoBoost models equipped with five-speed manual transmissions do not feature dual mass flywheels.
  • The car offers firm and responsive steering, contributing to an engaging driving experience.
  • The six-speed manual transmission offers smooth and precise gear changes, enhancing the driving experience.
  • The 1.6-litre engine provides excellent performance, delivering substantial torque for responsive acceleration.
  • The car provides a comfortable ride, making it ideal for daily driving.
End of the Mk7 section.Pick another year ↑Check a Ford Fiesta advert →
Generation 4 of 41 known fault · 9 owner reports · 7 good notes

Ford Fiesta Mk8 (2017 to 2023) problems

Engine/EmissionsHigh severity📝 Editorial

Wet timing belt degradation leading to oil starvation (on engines manufactured before change to timing chain)

Rough guide
£1000-4000

Typical symptoms

  • low oil pressure warning
  • loss of brake servo
  • engine failure

Affected vehicles

Engines:
1.0 EcoBoost (pre-chain)
Typical mileage:
50000-80000 miles
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What owners report on the Mk8

9 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 2021The heater fan on a 2017 Ford Fiesta 1.0 EcoBoost repeatedly failed, only working on the highest setting, requiring a new motor.
  • Engine · July 2020A 2020 Fiesta developed an engine warning light and low oil pressure message shortly after leaving the dealership.
  • Electrics · November 2019The Sync3 infotainment system in a 2018 Fiesta 1.0 EcoBoost automatic frequently malfunctioned, causing the satellite navigation to go blank.
  • Exhaust · September 2019A brand new Ford Fiesta 1.0 EcoBoost displayed an audible warning and light, likely for the petrol particulate filter, which then self-cleaned.
  • Engine · July 2019A June 2018 Ford Fiesta 1.1 Titanium displayed a yellow spanner warning and repeatedly lost engine power for several seconds.
  • Electrics · June 2019The stop-start function on a 2017 Fiesta 1.0-litre automatic rarely activated, and the battery went flat after four days of inactivity.
  • Electrics · June 2019A 2017/67 Ford Fiesta refused to unlock with either key fob, requiring a manual entry and a software update to restore key function.
  • Gearbox and clutch · February 2019The manual gearbox of a 2018 Fiesta 1.1 failed at nine months old, making it impossible to select gears; the car was returned for a full refund.
  • Electrics · March 2018The reversing camera on a 2017 Fiesta 1.0 EcoBoost operated intermittently, even after camera replacement, with no software fix available.

What owners like about the Mk8

7 notes
  • This model offers excellent refinement, ride quality, and handling, especially the ST-Line with 17-inch wheels and 45 profile tyres.
  • The cabin is comfortable and well-made, providing a pleasant environment for occupants.
  • The car features a practical boot capacity, offering sufficient storage space for everyday use.
  • The Fiesta is easy to drive in town, making it suitable for urban environments.
  • The car features a reliable six-speed torque converter automatic transmission, avoiding the problematic Powershift dry clutch.
  • The 2017 Fiesta achieved a five-star Euro NCAP rating, with strong scores for adult, child, and pedestrian safety.
  • The Ford Fiesta offers a delightful driving experience, appealing to both keen drivers and casual users.
End of the Mk8 section.Pick another year ↑Check a Ford Fiesta advert →

Sellers rarely admit these faults outright

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Ford Fiesta service intervals: cambelt, chain and gearbox oil

An overdue cambelt is the most expensive thing a seller can fail to mention on a used Fiesta. These are the figures UK specialists work to.

Timing belt (cambelt)Wet belt
Mk7, Mk8, 1.0 ECOBOOST
100,000 miles or 6 years, whichever comes first

Ford originally specified 10 years / 150,000 miles. Revised to 6 years / 100,000 miles to mitigate the risk of oil strainer blockage and engine failure. Specialists advise even earlier replacement.

Timing belt (cambelt)Belt
Mk6, Mk7, 1.25
100,000 miles or 8 years, whichever comes first

The 1.25 Sigma/Zetec-SE petrol is belt driven. Ford dealers commonly quote 10 years / 100,000 miles while editorial sources give 8 years / 100,000 miles, so the shorter 8-year term is recorded. Failures are rare but this is an interference engine, and many garages advise doing belt and tensioner earlier on age grounds.

Timing belt (cambelt)Belt
Mk6, Mk7, 1.4 TDCI
120,000 miles or 10 years, whichever comes first

The PSA-derived 1.4 TDCi (DV4) is belt driven. Editorial guidance is replacement around 120,000 miles while a Ford technician source quotes 150,000 miles / 10 years; the shorter figure is recorded. Replace the water pump with the belt kit.

Timing belt (cambelt)Belt
Mk7, Mk8, 1.5 TDCI
149,000 miles or 10 years, whichever comes first

The 1.5 TDCi (PSA-derived DLD family) uses a conventional dry belt, not a wet belt. The catalogue schedule is 240,000 km (149,000 miles) or 10 years; given how high that mileage figure is, the 10-year limit is the operative one on UK cars. Trade practice is often much earlier, around 100,000 miles. Replace belt kit and water pump together.

Timing belt (cambelt)Belt
Mk6, Mk7, 1.6 TDCI
87,000 miles or 10 years, whichever comes first

The 1.6 TDCi (PSA DV6) is belt driven. Ford's schedule for this engine is 140,000 km (87,000 miles) / 10 years for cars built to July 2011 and 180,000 km (112,500 miles) / 10 years after; the shorter figure is recorded. Known for tensioner problems, so always replace the water pump with the belt.

Timing belt (cambelt)Wet belt
Mk8, 1.1 TI-VCT
100,000 miles or 10 years, whichever comes first

The Mk8 Fiesta 1.1 Ti-VCT three-cylinder uses a WET belt (belt-in-oil) like the 1.0 EcoBoost, and UK parts suppliers sell dedicated 1.1 wet belt kits for it. Ford's quoted schedule is around 10 years / 100,000-125,000 miles, but wet-belt specialists advise 8 years / 80,000 miles and strict use of the correct oil spec, because degraded belt material can block the oil pickup exactly as it does on the 1.0.

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

Ford Fiesta buying questions

Is a used Ford Fiesta reliable?

The Ford Fiesta has 17 known faults in our database across 4 generations, 12 of them rated high severity. The most serious are gearbox (the 6-speed dry clutch Powershift automatic transmission is highly problematic) and fuel system (the 1.4 TDCI engine, particularly with Siemens SID804 or SID802 common rail injection). 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 Ford Fiesta problems?

Three stand out. Gearbox: the 6-speed dry clutch Powershift automatic transmission is highly problematic (typically 15000 to 80000 miles). Fuel system: the 1.4 TDCI engine, particularly with Siemens SID804 or SID802 common rail injection (typically 50000 to 100000 miles). Gearbox: the ASM Module and gear actuators of the 1.4 'Durashift' automated manual transmission are prone (typically 40000 to 80000 miles). The full list above is grouped by generation, with typical mileage and a rough repair cost for each.

Which Ford Fiesta years should I avoid?

No Ford Fiesta year is a write-off, but the Mk7 (2008 to 2017) carries the most serious faults: gearbox, fuel system, engine and cooling system. The Mk6 (2002 to 2008), Mk8 (2017 to 2023) and Mk4 / Mk5 (1995 to 2002) 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 Ford Fiesta?

Ask the seller about the gearbox and fuel system faults on this page and whether they have been fixed, with invoices. On the test drive watch for juddering or shuddering on acceleration, especially at low speeds or from a standstill, engine losing power or going into limp home mode and loss of 'drive' or inability to select gears. Read the MOT history for repeat advisories, then paste the advert into the free check, which reads it against all 17 known faults before you travel. Check a Ford Fiesta advert →

What is the real MPG of a Ford Fiesta?

Owners report 46.8 mpg on average across the Ford Fiesta engines with data, about 79% 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 7,110 owner submissions. Ford Fiesta Real MPG by engine →

Looking at a Ford Fiesta right now? Check the advert before you go and see it.

Where this Ford Fiesta fault data comes from

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 Ford Fiesta 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.

CarAdCheck is not affiliated with Honest John or Volkswagen Financial Services. What happened to Honest John, and where each feature lives now.

Before you go and see it

Knowing what a Ford Fiesta 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.

Which cars have a wet belt, and how to tell before you buy9 min readHow to find a car's previous adverts13 min readThe most economical used cars in the real world, not the brochure9 min read
All buyer's guides →

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