MINI Convertible problems, reliability and years to avoid
If you are considering buying a used MINI Convertible, these are the common problems worth knowing about first. Our garage database tracks 10 known faults for this model, 2 of them rated high severity. Every one below is a repair bill a seller has good reason not to mention.
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Is the MINI Convertible reliable?
The MINI Convertible has 10 known faults in our database across 3 generations, 2 of them rated high severity. The most serious are electrics (three owners reported an oil solenoid whose seal leaks) and engine (timing chain stretch, hydraulic tensioner failure). None of them makes the car a bad buy on its own; the risk is a seller who knows and says nothing.
That is a count of the faults we hold, not a reliability score. Popular cars get written about more, and a newer generation has had less time to show its faults.
Which MINI Convertible years should you avoid?
No year is a write-off on its own. What matters is which serious faults a given year and engine can have, and whether the car in front of you has had them fixed.
R52, 2004 to 2008
7 known faults, none rated high severity
R57, 2009 to 20152 high severity
3 known faults, the serious ones in the electrics, engine
F57, 2016 on
No faults on record yet
Years and engines with a serious known fault
2010 to 2013, Petrol (Cooper and Cooper S): three owners reported an oil solenoid whose seal leaks
2006 to 2016, 1.4 / 1.6 Petrol (BMW/PSA Prince family: N12 / N16 non-turbo, including the 2007-2010 One 1.4 and the later One 1.6, N14 / N18 turbo); not the R50/R53 Tritec cars, the diesels or the 2014-on B38/B48 cars: timing chain stretch, hydraulic tensioner failure
Each one is set out in full below, with the symptoms, the typical mileage and a rough repair cost.
Generation 1 of 37 known faults · 2 owner reports
MINI Convertible R52 (2004 to 2008) problems
SteeringMedium severity💬 3 owner reports, 2013 to 2015
The power steering is electro-hydraulic: an electric motor drives the pump. The motor burns out, and when it overheats it sometimes takes the wiring loom with it, so the assistance disappears and the steering goes very heavy. Corroded wiring to the pump and failed pump seals (noisy steering with low fluid) are the same system failing in other ways. Dealers quoted about £750, and MINI UK has paid all or half of the bill as goodwill on cars well out of warranty, including a 2003 car at 89,000 miles and another past 100,000 miles.
Rough guide
£400-800
Typical symptoms
steering suddenly very heavy, often with the power steering warning on
whining or groaning from the pump, worse on full lock
burning smell from under the bonnet after the steering fails
Affected vehicles
Engines:
All first-generation cars (One, One D, Cooper, Cooper S and the R52 Convertible to 2008)
Typical mileage:
40000-100000 miles
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SuspensionMedium severity📝 Editorial
First-generation MINIs pull to the nearside even after a wheel alignment. On early cars the cause is the original type of front strut, identified by a domed cap on the strut centre nut, and the fix is new struts complete with top mounts and anti-roll bar drop links. On any car the front suspension turrets can be pushed upwards, which needs the top mounts replaced and the turret pulled back on a body jig, a body shop job rather than a suspension one.
Rough guide
£300-900
Typical symptoms
car drifts to the left on a flat road with the wheel held straight
alignment keeps going out or cannot be set to specification
uneven front tyre wear
Affected vehicles
Engines:
All first-generation cars; worst on early cars with the first-type front struts (domed cap on the centre nut)
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SteeringMedium severity📝 Editorial
Power steering trouble was reported on the first-generation MINI. The electric motor that drives the steering pump can stop working and, by overheating, sometimes damages the wiring loom too; corroded wiring to the pump causes the same failure. BMW dealers quoted £750 for the repair, and BMW sometimes paid half as goodwill.
Rough guide
£750
Typical symptoms
steering suddenly going heavy
power assistance cutting in and out
Affected vehicles
Engines:
All engines
Typical mileage:
unknown miles
1 more owner report backs this up
December 2013An Electric Power Steering Pump failed on a 2004 R52 MINI Convertible at 44,000 miles.
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BrakesMedium severity📝 Editorial
The ABS and traction control (ASC) module on the first-generation MINI started failing after three to four years. BMW dealers could split the unit and repair it rather than replace the whole assembly, for about £600 to £700.
Rough guide
£600-700
Typical symptoms
ABS and ASC warning lights on
traction control not working
Affected vehicles
Engines:
All engines
Typical mileage:
unknown miles
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Bodywork/ChassisMedium severity📝 Editorial
Glass rear windows on the R52 Convertible were reported shattering for no clear reason, and the fix needed a whole new hood, put at £1,700. MINI UK sent its dealers a technical bulletin on the problem in 2005, and a spate of cases was reported on an owners' forum.
Rough guide
£1700
Typical symptoms
cracked or crazed glass rear window
rear window broken with no sign of an impact
Affected vehicles
Engines:
All engines
Typical mileage:
unknown miles
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Bodywork/ChassisMedium severity📝 Editorial
On the R52 Convertible, wear to parts of the folding hood was noted as a problem, and many hoods were renewed under warranty.
Typical symptoms
worn or frayed hood fabric, seams or fittings
wear marks along the folds of the hood
Affected vehicles
Engines:
All engines
Typical mileage:
unknown miles
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ElectricalMedium severity📝 Editorial
On the R52 Convertible, water can get into the body control module, possibly because the drain in the window pillar on the front offside gets blocked, and that can leave the car with a flat battery.
Typical symptoms
battery going flat after the car has stood
damp or water marks around the front offside window pillar
Affected vehicles
Engines:
All engines
Typical mileage:
unknown miles
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What owners report on the R52
2 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.
Bodywork · November 2019A MINI Cooper R52 Convertible experienced significant dampness in the passenger footwell, possibly due to a faulty door or window seal.
Cooling · February 2011A shortage of thermostat housings was reported, a component known to fail on R50, R52, and R53 engines.
Generation 2 of 33 known faults · 6 owner reports · 5 good notes
MINI Convertible R57 (2009 to 2015) problems
Engine/EmissionsHigh severity📝 Editorial
Timing chain stretch, hydraulic tensioner failure and cracked plastic guide rails on the BMW/PSA 'Prince' 1.6 petrol, giving the notorious 'death rattle' on cold start and, if ignored, a jumped or snapped chain. This is a Prince family fault rather than a Cooper S one. The turbocharged N14 (2006-2010) is the worst of the four and is the engine most death rattle articles are describing, but the naturally aspirated N12 (2006-2010) and N16 (2010-2016) fitted to the plain One and Cooper use the same chain, hydraulic tensioner and guide rails, and UK MINI specialists sell the chain and tensioner job as a named repair for both of them. The turbo N18 (2010-2016) got a revised tensioner and some specialists treat it as cured, though failures are still reported
Rough guide
£800-1500
Typical symptoms
loud metallic 'death rattle' on cold start
engine management light (cam timing codes)
limp mode
Affected vehicles
Engines:
1.4 / 1.6 Petrol (BMW/PSA Prince family: N12 / N16 non-turbo, including the 2007-2010 One 1.4 and the later One 1.6, N14 / N18 turbo); not the R50/R53 Tritec cars, the diesels or the 2014-on B38/B48 cars
Typical mileage:
40000-80000 miles
3 more owner reports back this up
August 2019A 38,000-mile R57 MINI Cooper convertible suffered timing chain guide bracket failure, causing both chains to snap and extensive engine damage.
October 2017A 2012 MINI Cooper convertible required a new timing chain and other repairs after a rattle was heard on engine start-up.
March 2012Low fuel pump pressure in the 1.6 petrol engine may lead to low oil pressure, starving the timing chain and causing stretching.
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ElectricalHigh severity💬 3 owner reports, 2015 to 2016
Three owners reported an oil solenoid whose seal leaks, letting engine oil creep along the wiring harness into the engine control unit, so both the control unit and the harness needed renewing. It hit a 2011 Cooper at 25,000 miles, a late-2010 Cooper S convertible and a 2011 Countryman Cooper S at 55,000 miles; full bills were £1,800 to £2,525 before any goodwill.
Rough guide
£1800-2525
Typical symptoms
engine warning light
difficult or failed starting
oil around the solenoid's wiring plug
Affected vehicles
Engines:
Petrol (Cooper and Cooper S)
Typical mileage:
25000-55000 miles
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Two owners of 2013 and 2014 R57 Convertibles reported rain leaking in where the folding roof meets the passenger door seal. One was quoted over £500 to fix it; on the other the dealer judged the roof faulty from the factory and put a replacement at about £2,000, which BMW covered as goodwill.
Rough guide
£500-2000
Typical symptoms
drips from the roof lining by the passenger door
wet boot carpet and contents
Affected vehicles
Engines:
All engines
Typical mileage:
unknown miles
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What owners report on the R57
6 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.
Gearbox and clutch · February 2017A 2013 MINI One convertible was reported to have a stiff manual gearbox.
Engine · July 2016A 2009 R57 MINI convertible automatic, with 65,000 miles, was consuming one litre of oil every 1,500 miles.
Electrics · May 2016A December 2010 MINI Cooper S Cabriolet had a starting problem due to a failed oil seal, costing £2,525 to repair.
Bodywork · February 2015Rainwater entered the boot lid of a MINI R57 convertible, causing water to accumulate and short out the car's electrics.
Bodywork · June 2014If an R57 MINI convertible roof fails to open, check the parcel shelf alignment and sensor connections in the boot.
Engine · June 2013A 2009 MINI Cooper Convertible had its cam sensor changed twice under warranty, then failed again out of warranty.
What owners like about the R57
5 notes
This MINI Convertible model is widely considered to be a highly desirable vehicle with a very attractive design.
The car exhibits good handling characteristics, even with the roof in the down position.
This generation of MINI Convertible features lower emissions compared to its predecessor.
The MINI Convertible maintains its value well over time, experiencing only low levels of depreciation.
Air conditioning is now included as a standard feature in this model.
Generation 3 of 30 known faults · 1 owner report · 3 good notes
MINI Convertible F57 (2016 on): owner reports
What owners report on the F57
1 single report, 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.
Gearbox and clutch · May 2019A 2016 MINI Cooper convertible at 19,000 miles had a clutch warning light, with a dealer quoting £2,000 for replacement.
What owners like about the F57
3 notes
Buyers of the MINI Convertible benefit from a wide array of customisation options to personalise their vehicle.
The MINI Convertible offers an engaging and enjoyable driving experience, making it a fun car to operate.
The cabin of the MINI Convertible is both stylish and constructed to a high standard, providing a pleasant environment.
Recall work is done by the manufacturer, and GOV.UK says you will not usually have to pay for it. These are the 3 DVSA recalls for the Convertible, newest first. They do not tell you whether this particular car has had the work: for that, put the registration into the free GOV.UK MOT history check, which shows a recall status where the manufacturer shares it, or ask a franchised dealer to check the VIN.
🏛️ September 2025Cars built June 2025 to July 2025
Front Seat Belt Retractor
On affected vehicles the front seat belts may have damage to the torsion bar caused during manufacture. The retention function of the seat belt may not perform as expected in the event of an accident.
Put right by: Affected vehicles will have the affected seatbelts replaced.
DVSA R/2025/399115 vehicles affected in the UK
🏛️ August 2025Cars built July 2023 to October 2024
Wiper Wiring Harness MINI F65 F66 F67
On affected vehicles the windscreen wiper wiring harness may be routed incorrectly and can be damaged by contact with the windscreen wiper mechanism.
Put right by: On the affected vehicles the wiper wiring harness will be inspected and re-routed if required. If any damaged wires are discovered these will be repaired and the control unit will be replaced.
DVSA R/2025/26328 vehicles affected in the UK
🏛️ March 2022Cars built February 2022 to March 2022
The micro gas generator within the front seatbelt's retractor may have been damaged
The micro gas generator within the front seatbelts retractor may have been damaged and may not act according to the specification in the event of an accident.
Put right by: On the affected vehicles the front seatbelts will be checked and replaced if they are found to have been damaged.
DVSA R/2022/0901,441 vehicles affected in the UK
Recall data published by the Driver and Vehicle Standards Agency under the Open Government Licence v3.0. A recall listed here may not apply to every car of this model: the build dates and the registration check are what decide it.
MINI Convertible timing chain, and service intervals
A timing chain has no change interval, which is not the same as lasting for ever. Listen for it on a used Convertible, and check the oil has been changed on time. These are the figures UK specialists work to.
Timing chainChain
1.6 TURBO, 1.6 PETROL, N14, N18
No fixed replacement interval
The N14/N18 Prince engines use a timing chain that is notorious for stretching and tensioner failure ('death rattle'). It often needs replacing before 60,000 miles if rattling on cold start.
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: November 2026
MINI Convertible buying questions
What are the most common MINI Convertible problems?
Three stand out. Electrics: three owners reported an oil solenoid whose seal leaks (typically 25000 to 55000 miles). Engine: timing chain stretch, hydraulic tensioner failure (typically 40000 to 80000 miles). Suspension: the power steering is electro-hydraulic: an electric motor drives the pump. The motor burns out (typically 40000 to 100000 miles). The full list above is grouped by generation, with typical mileage and a rough repair cost for each.
Which MINI Convertible years should I avoid?
No MINI Convertible year is a write-off, but the R57 (2009 to 2015) carries the most serious faults: electrics and engine. The R52 (2004 to 2008) and F57 (2016 on) have none rated high severity. 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 MINI Convertible?
Ask the seller about the electrics, engine and suspension faults on this page and whether they have been fixed, with invoices. On the test drive watch for engine warning light, loud metallic 'death rattle' on cold start and steering suddenly very heavy, often with the power steering warning on. Read the MOT history for repeat advisories, then paste the advert into the free check, which reads it against all 10 known faults before you travel. Check a MINI Convertible advert →
Are there any recalls on the MINI Convertible?
The DVSA lists 3 safety recalls for the MINI Convertible issued between 2022 and 2025. The most recent, from September 2025, is "Front Seat Belt Retractor". Recall work is done by the manufacturer, and GOV.UK says you will not usually have to pay for it. This list is by model, so it cannot tell you whether one particular car has had the work: the free GOV.UK MOT history check shows a recall status from the registration where the manufacturer shares it, and a franchised dealer can check the VIN.
What is the real MPG of a MINI Convertible?
Owners report 41.7 mpg on average across the MINI Convertible 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 220 owner submissions. MINI Convertible 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 MINI Convertible 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 MINI Convertible 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.