There are 1 owner-reported fuel system complaints for the 2021 MINI Countrymanin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
My 2021 MINI Cooper Countryman S model with John Cooper Works had to have a part replaced, a valve part, that allows the fuel tank to release air from the fuel tank. I had a message or symbol on the dash with an alert that would come on but then go away. I took it to the Sewell BMW MINI dealership in Plano, TX, on Spring Creek Parkway, and they diagnosed it and fixed it. The buildup of the air in the gas tank could have caused an explosion. Luckily, it was covered under my OEM warranty.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026