2018 GMC Acadia problems and complaints
Owners have filed 399 complaints with NHTSA about the 2018 GMC Acadia. The most-reported areas: Power Train (164), Unknown Or Other (119), Electrical System (110).
Key takeaways
- 399 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 | 164 | 41% |
| Unknown Or Other | 119 | 30% |
| Electrical System | 110 | 28% |
| Engine | 36 | 9% |
| 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%.
Parts for the 2018 GMC Acadia
GarageDex's verified specs for this car. Each Buy button searches Amazon for that exact part.
- Battery
- Engine oil
- Oil filter
- Engine air filter
- Cabin air filter
- Wiper blades
- Headlight bulb
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| 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.
Electrical System,unknown Or Other,engine - filed 2026-11-02
Our vehicle’s horn beeped and a message on the dash said vehicle not in park. I copied the following from your web site and am requesting an update: General Motors has acknowledged the "Shift to Park" issue through several Technical Service Bulletins (TSBs). While there hasn't been a formal safety recall for this speci...
Engine - filed 2026-10-25
Steering assist warning comes on when I start the car and then the engine fan starts up very loudly and code PO128. My car has 48,000 miles and is a 2018. I am seeing this is a known issue and should be part of a recall so I want to know if it’s covered.
Power Train - filed 2026-10-22
The contact owns a 2018 GMC Acadia. The contact stated that after parking the vehicle inside the garage, shifting to park(P) and turning off the vehicle, the vehicle suddenly rolled backwards approximately 3 feet. The contact stated that the failure had occurred on several occasions and the vehicle only moved backwards...
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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.