Most common 2018 Buick Enclave problems
Share of the 66 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Buick Enclave complaints by model year
Best Enclave years: 2013, 2022, 2018. Years to avoid: 2025, 2010, 2008. Compare all years →
What 2018 Buick Enclave owners say
Brakes all 21 →
The contact owns a 2018 Buick Enclave. The contact stated while driving approximately 35 MPH, and at various speeds, while the brake pedal was depressed, there was an abnormally loud high-pitched grinding or squeaking sound coming from the brakes. The contact stated that the noise was loud enough that pedestrians would turn and look at his vehicle when he depressed the brake pedal. The contact stated no warning light was illuminated. The contact had taken the vehicle to a local dealer, where the sound was being emitted and could not repair the failure. The manufacturer had been informed of the failure. The failure mileage was approximately 60,000.
The contact owns a 2018 Buick Enclave. The contact stated that while driving approximately 35 MPH, the vehicle suddenly began to drive sluggishly before coming to a stop. The brake warning light had illuminated and the message service ABS system was displayed. The vehicle was towed to the local dealer who diagnosed that the ABS computer had lost its program and needed to be reprogrammed. The vehicle was not yet repaired. The manufacturer was not contacted. The failure mileage was 52,000.
Transmission & drivetrain
The contact owns a 2018 Buick Enclave. The contact stated that while idling or at a complete stop, the vehicle lunged forward upon acceleration. The contact then stated that while shifted to park, the vehicle inadvertently started. The contact also stated that she heard a screeching sound in the wheels while shifting in the first gear, and intermittently in second and third gear. Additionally, the contact stated that the check engine warning light was previously illuminated; however, after driving the vehicle, the check engine light turned off. The vehicle was taken three times to the dealer where the failure could not be duplicated. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed that the warranty was not honored, and no assistance was provided. The failure mileage was 125,639.
The contact owns a 2018 Buick Enclave. The contact stated that while at a stop light, the accelerator pedal was depressed; however, the vehicle failed to respond as intended, with a grinding sound coming from the transmission. A bystander pushed the vehicle to the side road, and the vehicle was later towed to the residence. The contact's husband inspected the vehicle and determined that it had experienced transmission failure. No further information was available. The vehicle was not yet repaired. The manufacturer and local dealer were not contacted. The failure mileage was 110,000.
Engine & cooling
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 battery. The contact stated that the alternator had been replaced 6 times in total. Additionally, the contact stated while pulling out of the parking lot and onto the road, the vehicle shut off. The messages "Electronic Control Module Failure", "Battery Saver Active", "Battery Charging System" and "Steering Assist Is Reduced- Drive with Care" were displayed. The vehicle failed to restart and was towed to the dealer, where it was diagnosed with the Electronic Control Module (ECM) and alternator failures. The vehicle was being repaired. …
The contact owns a 2018 Buick Enclave. The contact stated that while idling or at a complete stop, the vehicle lunged forward upon acceleration. The contact then stated that while shifted to park, the vehicle inadvertently started. The contact also stated that she heard a screeching sound in the wheels while shifting in the first gear, and intermittently in second and third gear. Additionally, the contact stated that the check engine warning light was previously illuminated; however, after driving the vehicle, the check engine light turned off. The vehicle was taken three times to the dealer where the failure could not be duplicated. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed that the warranty was not honored, and no assistance was provided. The failure mileage was 125,639.
2018 Buick Enclave engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.6L 6-cyl | 9-speed automatic | FWD | 18 / 26 / 21 |
| 3.6L 6-cyl | 9-speed automatic | AWD | 17 / 25 / 20 |
EPA ratings. Class: SUV.
Frequently asked questions
Is the 2018 Buick Enclave a good car?
Based on 66 owner complaints filed with NHTSA, the 2018 Enclave rates better than average: 53% fewer complaints than a typical year of the Enclave at the same age. It is one of the best Enclave years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2018 Buick Enclave?
The brakes — 21 complaints, 32% of all complaints for this model year, most often about antilock › abs warning light. Next are the transmission & drivetrain (16) and engine & cooling (15).
How many recalls does the 2018 Buick Enclave have?
NHTSA lists no recalls for the 2018 Buick Enclave. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Buick Enclave?
The best years by complaints, compared at the same age, are 2013, 2022 and 2018. Years to avoid or approach with caution: 2025, 2010 and 2008. See the full Buick Enclave years comparison.
At what mileage do 2018 Buick Enclave problems happen?
The median mileage reported in complaints is about 24,000 miles; 70% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.