2018 Buick Enclave problems and complaints
Owners have filed 65 complaints with NHTSA about the 2018 Buick Enclave. The most-reported areas: Service Brakes (21), Power Train (15), Engine (13).
Key takeaways
- 65 owner complaints on file with NHTSA.
- 5 involve a crash, 0 a fire, 1 reported injury.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Service Brakes | 21 | 32% |
| Power Train | 15 | 23% |
| Engine | 13 | 20% |
| Electrical System | 10 | 15% |
| Unknown Or Other | 8 | 12% |
| Forward Collision Avoidance | 4 | 6% |
| Fuel/Propulsion System | 4 | 6% |
| Vehicle Speed Control | 2 | 3% |
| Suspension | 2 | 3% |
| Engine And Engine Cooling | 2 | 3% |
| Exterior Lighting | 2 | 3% |
| Air Bags | 2 | 3% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2018 Buick Enclave SUV AWD | 5/5 | 4/5 | 5/5 | 4/5 |
| 2018 Buick Enclave SUV FWD | 5/5 | 4/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Electrical System,vehicle Speed Control,forward Collision Avoidance - filed 2026-09-25
The vehicle is experiencing an intermittent but severe safety defect involving the StabiliTrak and Electronic Parking Brake (EPB) systems. While driving at operational speeds, the "Service StabiliTrak" warning light illuminates, immediately followed by the uncommanded, autonomous engagement of the electronic parking br...
Unknown Or Other - filed 2026-06-17
2018 Enclave w/106k on the odometer and the catalytic convertor cracked. $2200 repair.
Suspension,fuel/Propulsion System - filed 2026-06-08
I am submitting this letter to formally report two ongoing issues with my 2018 Buick Enclave. First, I have experienced persistent problems with the emissions purge valve. My vehicle has repeatedly triggered diagnostic trouble code P0496, indicating a malfunction in the purge valve system. I am aware that this issue h...
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More for the 2018 Buick Enclave
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.