2015 BMW 428I engine and engine cooling problems
26 owner complaints filed with NHTSA name the engine and engine cooling on the 2015 BMW 428I — 34% of all complaints for this model year.
What owners report
“The contact owns a 2015 BMW 428I. The contact stated that while driving approximately 29 MPH, the vehicle started to overheat and experienced reduced power, and there was smoke coming from under the hood. The contact stated that there were unknown warning lights illuminated. The contact was able to…”
filed Mar 4, 2026
“The contact owns a 2015 BMW 428I. The contact discovered that the water pump was continuously running after the vehicle was turned off. The contact referenced and associated the failure with NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the VIN was not…”
filed Feb 3, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine and Engine Cooling problems in other 428I years
| Year | Reports | Share |
|---|---|---|
| 2016 428I | 17 | 40% |
| 2014 428I | 9 | 25% |
Other reported problem areas on the 2015 BMW 428I
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.