There are 4 owner-reported engine complaints for the 2021 BMW 3 Seriesin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
My check engine light came on stating my engine coolant was low. I took it to a shop and was told I needed to replace my filter/coolant housing assembly.
I have reached out to both the manufacturer and dealership regarding “Recall Campaign No. 25V-636: Engine Starter” who both do not have a remedy for this recall and do not have a reasonable timeframe of when it will be resolved.
The contact owns a 2021 BMW 330I. The contact stated while driving 50 MPH and coming to a stop at a red traffic light, the contact started smelling smoke. There was no warning light illuminated. The contact turned off the vehicle, but the vehicle failed to restart with a message that the vehicle was unable to be restarted displayed. The contact turned on the hazard lights with the vehicle stopped in the middle of the road. The contact then noticed that there was smoke coming from the front end of the vehicle and immediately called 911. The contact stated that while a Metro service employee was attempting to assist the contact in towing the vehicle to the side of the road, the worker noticed that fire had started underneath the vehicle and called the Fire Department. The contact exited the vehicle and noticed that there was fire underneath the front end. The contact stated that the front end of the vehicle then burst into flames. The fire was extinguished by the Fire Department. A Fire Department report was filed. The front end of the vehicle was significantly burned. A Police Officer arrived at the scene but had not filed a report because there was no injury sustained. The Police Officer provided his badge number to the contact. The vehicle was towed to a tow lot, where it was being evaluated by the Insurance Company. The contact stated that the vehicle was a total loss; however, the Insurance Company had not yet confirmed that the vehicle was a total loss. The dealer and the manufacturer were not notified of the failure. The vehicle was not yet diagnosed or repaired. The failure mileage was approximately 30,000.
Motor mounts failed on 2021 G20 that only has 52k miles. Vehicle when purchased as CPO had 27k miles and was suppose to be inspected to be certified as CPO. In less than 30k miles from time of purchase it seems these failed early resulting in me driving the vehicle in an unsafe manner until they were scheduled for repair
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 26, 2026