Problems · NHTSA complaints

2015 MINI Cooper S problems

Owners filed 71 complaints about the 2015 MINI Cooper S with NHTSA between Jun 2015 and Jan 2026. The most-cited component is engine (17).

Complaints
71
Filed with NHTSA
Crashes
3
Reported by owners
Fires
2
Reported by owners
Injuries
1
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Engine17
  2. Fuel/propulsion system13
  3. Electrical system11
  4. Power train10
  5. Service brakes8
  6. Structure3
  7. Air bags3
  8. Suspension3
  9. Exterior lighting3
  10. Visibility2
  11. Steering2
  12. Vehicle speed control2
  13. Equipment2
  14. Engine and engine cooling1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 27, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20157
20168
20174
20185
20199
20204
20217
202210
20238
20243
20255
20261

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Engine

17 reports2 crashes1 fire
“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. Also, since 22feb2025, I am not able to add fuel to the tank because the pump stops constantly and causes spill of fuel. This can cause fire. Never happened before. Tried at least 4 different gas station and same result. Dealer charges over $200 to perform inspection/diagnostics. Not done yet. Repairs to fuel tank are in the thousands. No warning in the car dashboard for none of the issues. Car with less than 80k miles.”
Owner complaint to NHTSAFiled Feb 23, 2025Engine, Fuel/propulsion systemODI 11644422

Fuel/propulsion system

13 reports
“The fuel filling nozzle turns off repeatedly (as if already full) while filling the fuel tank. About 1/4 to 1/3 of a gallon of fuel will go in before it turns off, backs up, and the gas overflows onto the outside of the car and onto the concrete. It happens regardless of the pump being used. It started happening occasionally a few months ago if the tank was refilled when a quarter full. It now happens consistently, no matter the fuel level. I had the car put on a lift and the system diagnosed today. The mechanic said the cause is a faulty service valve within the fuel tank assembly. They also said it is a known issue with F56 Mini Coopers.”
Owner complaint to NHTSAFiled Oct 9, 2025Fuel/propulsion systemODI 11692422

Electrical system

11 reports2 crashes
“While driving in the rain (light rain) front right and rear left brakes locked up. No warning lights came on, it was a very dangerous situation. The car is currently at a repair shop getting looked at, I had to have it towed there because those wheels will not turn while in neutral even. Reading forums this is a common problem, very serious and dangerous especially with no warning.”
Owner complaint to NHTSAFiled Jan 23, 2025Electrical system, Service brakesODI 11638047

Power train

10 reports1 crash1 related recall
“When refueling, nozzle kept shutting off, a gallon was pumped after nine attempts, also fuel erupted as the fill tube was filled with gas. reluctant to drive this car not knowing how much gas is in the tank. The needle shows less than 1/4 and miles remaining fluctuates between 80 and 110 miles. We are told that this problem exists in many mini automobiles, dealer has replacement gas tanks, but same problem exists Parking our Mini, indication of "roll back" is possible when car is parked. Shifter unit was replaced due to torsion spring.”
Owner complaint to NHTSAFiled Sep 20, 2022Power train, Fuel/propulsion systemODI 11485453

Service brakes

8 reports2 crashes
“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 inspected but is available for inspection”
Owner complaint to NHTSAFiled Oct 26, 2023Service brakesODI 11551994

Structure

3 reports1 related recall
“The rear windshield fell out of the top of my convertible. There was no accident or foul play involved. The glue that bonds the window to the top became unglued. This happened at 70,000 miles. The top is made of fabric and the window is made out of glass. Have to you replace the entire top to repair it. Not sure why this is not a recall. It is a well-known problem for the car.”
Owner complaint to NHTSAFiled Jan 3, 2026StructureODI 11708598
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 27, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.