Reliability, what owners report, and what it costs to keep.
AVOIR's read: the numbers are mixed and the complaint record is worth reading before you commit.
Owners have filed 53 complaints with NHTSA about the 2015 MINI Cooper Roadster, and it carries no recalls. These are owner allegations rather than confirmed defects, but the pattern of what people complain about is the most useful signal a used buyer has.
| Area | Complaints | Share |
|---|---|---|
| Fuel/propulsion system | 8 | 15% |
| Engine | 7 | 13% |
| Electrical system | 6 | 11% |
| Power train | 5 | 9% |
| Suspension | 3 | 6% |
| Service brakes | 3 | 6% |
| Engine | 2 | 4% |
| Visibility | 2 | 4% |
| Unknown or other | 2 | 4% |
| Engine | 1 | 2% |
Verbatim from NHTSA complaint records, trimmed for length.
Lower Engine Support and Passenger Engine Mount damaged as per routine inspection by dealer in Feb2025. Never diagnosed before. Repair done by independent service center in Feb2025 and I have receipt of approximately 1K.
NHTSA complaint: Engine
While driving the rear view mirror suddenly tilted downward (drooped). What happened, was that the tension ring popped off. As it turns out, this is a known issue per internet Mini Cooper pages. On hot days the ring lo
NHTSA complaint: Visibility
The contact owns a 2015 Mini Cooper. The contact stated that while driving at an undisclosed speed, the rear convertible glass suddenly separated from the convertible compartment and fell on the vehicle. The vehicle was
NHTSA complaint: Visibility
The sensors do not work. The car does not tell me when oil is needed, when my tires are low. No sensors work in the car. The dealer, Mini Of Edison, states FOUND INTERNAL HARDWARE FAULTS. But are stating its costs 2300
NHTSA complaint: Electrical system
The fuel filling nozzle turns off repeatedly while trying to fill the fuel tank and spills out causing a safety and environmental hazard, regardless of the pump being used. As a result, no fuel goes into the gas tank, i
NHTSA complaint: Fuel/propulsion system
What component or system failed or malfunctioned, and is it available for inspection upon request? CONTROL ARMS AND BUSHINGS How was your safety or the safety of others put at risk? CONSTANT CREAKING AND CLUNKING OF FRO
NHTSA complaint: Suspension
Without any warning lamps,The vehicle started pulling left when the brakes were applied a certified mechanic looked at it and feels that is the due to a defective DSC/ABS control unit. The unit hasn't been otherwise insp
NHTSA complaint: Service brakes
Fuel tank causes gas pump to click off after dispensing a tenth gallon of gasoline. Gas spills from gas tank while removing pump creating a safety and environmental hazard. Fuel tank will not accept gas at pump. No warni
NHTSA complaint: Fuel/propulsion system
| Reliability raw | 67 | good |
|---|---|---|
| Longevity est. | 70 | good |
| Maintenance | 61 | average |
| Depreciation | 57 | average |
| Performance | 41 | below average |
| Efficiency | 48 | below average |
Percentile ranks against other sports & two-seaters in the catalog.
What stands behind each score for this car:
Owners have filed 53 complaints with NHTSA for this model-year, and fuel/propulsion system is the most reported area with 8 of them (15%). No recalls are on record for it.
AVOIR scores its reliability 67/100 (good) from NHTSA recall campaigns and complaint density. That figure is a raw complaint count, not yet adjusted for sales volume, so a high-volume model scores worse than it deserves.
AVOIR scores its longevity 70/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 2015 car has no 200,000-mile population to observe yet, so treat it as a prior rather than evidence.
AVOIR's read: be careful, because the numbers are mixed and the complaint record is worth reading before you commit. Its overall ownership score is 60/100. Condition, mileage and service history still matter more than any score, so get a pre-purchase inspection on the specific car.
Sources: NHTSA recalls and complaints, EPA fuel economy, IIHS awards, and live market listings. A score describes a model-year, not the individual car in front of you. Get a pre-purchase inspection.