2011 Buick Regal engine problems
108 owner complaints filed with NHTSA name the engine on the 2011 Buick Regal — 39% of all complaints for this model year.
What owners report
“While driving on the highway at 60 mph, warning on dash came on saying “engine power reduced” and drop down speed to around 25 mph and I could not accelerate more than 25 mph on the highway which could have caused an accident because of the traffic flow behind me. I put a code scanner under the…”
filed May 13, 2026
“The contact owns a 2011 Buick Regal. The contact stated that while driving at 30 MPH, the vehicle stalled with the check engine warning light illuminated. The vehicle was able to be restarted. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware…”
filed Oct 8, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Regal years
| Year | Reports | Share |
|---|---|---|
| 2018 Regal | 5 | 26% |
| 2016 Regal | 5 | 12% |
| 2015 Regal | 9 | 27% |
| 2014 Regal | 9 | 24% |
| 2013 Regal | 9 | 10% |
| 2012 Regal | 21 | 23% |
| 2004 Regal | 18 | 27% |
| 2003 Regal | 26 | 26% |
| 2002 Regal | 33 | 28% |
| 2001 Regal | 52 | 28% |
| 2000 Regal | 28 | 15% |
| 1999 Regal | 49 | 20% |
Other reported problem areas on the 2011 Buick Regal
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.