2018 Buick LaCrosse problems and complaints
Owners have filed 12 complaints with NHTSA about the 2018 Buick LaCrosse. The most-reported areas: Electrical System (5), Engine (4), Power Train (3).
Key takeaways
- 12 owner complaints on file with NHTSA.
- 0 involve a crash, 0 a fire, 0 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 5 | 42% |
| Engine | 4 | 33% |
| Power Train | 3 | 25% |
| Fuel/Propulsion System | 2 | 17% |
| Vehicle Speed Control | 2 | 17% |
| Service Brakes | 1 | 8% |
| Hydraulic | 1 | 8% |
| Fuel System | 1 | 8% |
| Gasoline | 1 | 8% |
| Unknown Or Other | 1 | 8% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2018 Buick LaCrosse 4 DR AWD | 5/5 | 5/5 | 5/5 | 5/5 |
| 2018 Buick LaCrosse 4 DR FWD | 5/5 | 5/5 | 5/5 | 5/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Power Train,electrical System,fuel/Propulsion System - filed 2025-11-11
When I get to a stop sign, and a stop light, when trying to accelerate after a complete stop, the car would struggle to accelerate to go forward. Where the shifting gears would start blinking, and the warning lights (engine power reduced, engine light, and the traction safety collision light) would display itself maki...
Vehicle Speed Control,engine - filed 2025-09-22
The contact owns a 2018 Buick LaCrosse. The contact stated the hand controls were not working properly. While driving, the accelerator pedal was depressed, but the vehicle failed to respond. The engine power reduced message was displayed, and the check engine warning light was illuminated. After several attempts, the c...
Engine - filed 2024-11-05
The 3.6 liter engine in my 2018 Buick Lacrosse Avenir only has 53,939 when we experienced a thermostat failure. The engine temperature was dead cold, and the dual electric fans were running non-stop. When I scanned the trouble code, I found PO128 which points to a faulty thermostat. Because the thermostat is buried ...
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More for the 2018 Buick LaCrosse
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.