MINI Cooper Convertible Engine Problems by Year
By CarWhere Research · Updated
Some, but not unusually many. 55 of the 256 owner complaints filed with NHTSA for the 2011–2015 MINI Cooper Convertible (21.5%) name the engine, near the 19.4% median share across the 152 models we track. We have no published sales figures for this model, so there is no per-1,000 rate. The worst year is 2011.
Engine complaints
55
Filed with NHTSA, 2011–2015 models
Per 1,000 sold
No sales data
Not computed without a published sales figure
Share of all complaints
21.5%
of 256 complaints for this model
Engine recalls
0
NHTSA campaigns, all years
MINI Cooper Convertible engine complaints by model year
Owner complaints filed with NHTSA whose component list includes Engine and Engine Cooling. Worst years are highlighted.
| Model year | Engine complaints | Share of all complaints | Crash / fire / injury | Engine recalls | Engine TSBs* |
|---|---|---|---|---|---|
| 2011WORST | 19 | 20.9% | 4 | — | — |
| 2012 | 18 | 27.7% | 6 | — | — |
| 2013 | 4 | 8.5% | 0 | — | — |
| 2015 | 14 | 26.4% | 2 | — | — |
- Older model years have had more time on the road to collect complaints, so compare neighboring years, not 2010 against 2024.
- Crash / fire / injury = complaints where the owner reported a crash, a fire or an injury.
- No row for 2014: NHTSA's complaints data returned no records for that year under this model's names.
- *Technical service bulletins in the year's leading TSB categories that name the engine.
Common MINI Cooper Convertible engine problems owners describe
We searched the narratives of all 55 engine complaints for symptom keywords. One complaint can mention several, so the shares don't add up to 100%.
MINI Cooper Convertible years to avoid for the engine
2011 MINI Cooper Convertible
19 engine complaints (20.9% of the year's 91). Most often described: overheating or coolant loss.
Worst years are those with at least 10 engine complaints and at least 1.5 times the model's median year. For every year's overall verdict, including other systems, see the MINI Cooper Convertible years to avoid.
Related research
Frequently asked questions
Does the 2011 MINI Cooper Convertible have engine problems?
Yes, it is one of the worst years. Owners filed 19 engine complaints with NHTSA for the 2011 MINI Cooper Convertible, 20.9% of all 91 complaints for that year. The most common description is "overheating or coolant loss" (5 complaints). 4 of those complaints report a crash, fire or injury.
Which MINI Cooper Convertible years have the most engine complaints?
2011 (19), 2012 (18) and 2015 (14), by owner complaints filed with NHTSA that name the engine. Raw counts favor older and higher-selling years, so treat them as a signal, not a rate.
What are the most common MINI Cooper Convertible engine problems?
In the 55 engine complaints, owners most often describe overheating or coolant loss (32.7%), smoke, burning smell or fire (18.2%) and misfire or check-engine light (14.5%). One complaint can mention several symptoms.
Is this a engine failure rate?
No. These are complaints owners chose to file with NHTSA. Many failures are never reported, and one complaint is not a confirmed defect. Without sales figures, a high count can simply mean a high-selling model.
How we count
Counts are unique owner complaints (by NHTSA ODI number) filed with NHTSA for each MINI Cooper Convertible model year, from NHTSA's public complaints data fetched July 2026 to November 2026. A complaint counts as a engine complaint when NHTSA's component list for it includes Engine and Engine Cooling.
Per 1,000 sold divides complaints by published U.S. calendar-year sales for that year. A year needs at least 5,000 sales to get a rate, and a model needs at least 3 such years for its overall rate. The comparison median covers every model with at least 50 engine complaints that clears those floors.
These are complaint rates, not failure rates. Owners report some problems more than others, and a complaint is not a confirmed defect.
Sources
- NHTSA complaints by vehicle (owner complaints API) — National Highway Traffic Safety Administration
- NHTSA recalls by vehicle — National Highway Traffic Safety Administration
- Report a vehicle safety problem — National Highway Traffic Safety Administration