2018 Buick Enclave problems and complaints
Owners have filed 64 complaints with NHTSA about the 2018 Buick Enclave. The most-reported areas: Service Brakes (21), Power Train (15), Engine (13).
Key takeaways
- 64 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 | 33% |
| Power Train | 15 | 23% |
| Engine | 13 | 20% |
| Electrical System | 9 | 14% |
| Unknown Or Other | 8 | 13% |
| Fuel/Propulsion System | 4 | 6% |
| Forward Collision Avoidance | 3 | 5% |
| Suspension | 2 | 3% |
| Engine And Engine Cooling | 2 | 3% |
| Exterior Lighting | 2 | 3% |
| Air Bags | 2 | 3% |
| Steering | 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.
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...
Electrical System,engine And Engine Cooling - filed 2026-05-26
The contact owns a 2018 Buick Enclave. The contact stated that while driving at various speeds, the vehicle shut off and failed to restart. The vehicle was towed to the dealer, where the alternator was replaced 4 times before the dealer diagnosed that the failure was due to oil leaking onto the alternator and the batte...
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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.