2018 GMC Acadia problems and complaints
Owners have filed 394 complaints with NHTSA about the 2018 GMC Acadia. The most-reported areas: Power Train (163), Unknown Or Other (118), Electrical System (108).
Key takeaways
- 394 owner complaints on file with NHTSA.
- 8 involve a crash, 1 a fire, 12 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Power Train | 163 | 41% |
| Unknown Or Other | 118 | 30% |
| Electrical System | 108 | 27% |
| Engine | 33 | 8% |
| Steering | 24 | 6% |
| Service Brakes | 21 | 5% |
| Electronic Stability Control (esc) | 12 | 3% |
| Fuel/Propulsion System | 7 | 2% |
| Lane Departure | 6 | 2% |
| Back Over Prevention | 5 | 1% |
| Suspension | 5 | 1% |
| Vehicle Speed Control | 5 | 1% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2018 GMC Acadia SUV FWD | 4/5 | 5/5 | 5/5 | 4/5 |
| 2018 GMC Acadia SUV AWD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Unknown Or Other - filed 2026-09-20
Urgent code going off due to thermostat not being red gauge is stuck
Engine - filed 2026-09-11
The car will frequently but not always fail to shut off when the start/stop button is pushed while in Park. The message "shift to park" come up on the display and a yellow light comes on in the button. I have to restart the engine and it often takes as many as 10 attempts to finally shut off the engine. Between each ...
Seat Belts - filed 2026-08-31
I am unknown of what the issue is with the seatbelts on all seats will not properly lock.
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More for the 2018 GMC Acadia
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.