2011 Buick Lacrosse engine problems
30 owner complaints filed with NHTSA name the engine on the 2011 Buick Lacrosse — 18% of all complaints for this model year.
What owners report
“I am reporting a serious safety defect involving a 2011 Buick LaCrosse CXL. The vehicle has repeatedly shut off while being driven, creating a dangerous situation. The issue first occurred in January 2026. The vehicle was later towed for repair in February 2026, and I was told the issue had been…”
filed Apr 14, 2026
“The contact owns a 2011 Buick Lacrosse. The contact stated that the engine misfired while driving at various speeds. The check engine warning light was illuminated. The contact took the vehicle to an independent mechanic and was informed that there was a defective valve in the engine which caused…”
filed Sep 21, 2022
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Lacrosse years
| Year | Reports | Share |
|---|---|---|
| 2017 Lacrosse | 5 | 15% |
| 2016 Lacrosse | 3 | 7% |
| 2015 Lacrosse | 1 | 2% |
| 2014 Lacrosse | 4 | 6% |
| 2013 Lacrosse | 30 | 23% |
| 2012 Lacrosse | 46 | 22% |
| 2010 Lacrosse | 44 | 23% |
| 2009 Lacrosse | 5 | 5% |
| 2008 Lacrosse | 17 | 7% |
| 2007 Lacrosse | 9 | 4% |
| 2006 Lacrosse | 8 | 3% |
| 2005 Lacrosse | 6 | 2% |
Other reported problem areas on the 2011 Buick Lacrosse
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.