Buick Enclave Common Problems

SERVICE BRAKES

Owners of the 2018 Buick Enclave frequently report issues with the electronic parking brake activating unexpectedly, both while stationary and in motion, often requiring the vehicle to be turned off to reset the system. Complaints also describe instances of brake system malfunctions, including loud grinding noises and ABS warning lights, with some incidents leading to crashes due to the brakes not engaging. These issues are reported across various mileage ranges, with some occurring as early as 1,200 miles. Safety implications are significant, with owners describing loss of vehicle control and requiring towing due to brake failures. Potential buyers should be aware of these recurring brake system issues, as they may impact vehicle reliability and safety.

Severity signals: 2 crash, 0 fire, 0 injury reports

POWER TRAIN

Owners report several power train issues with the 2018 Buick Enclave, primarily involving transmission failures and torque converter problems. Complaints frequently mention symptoms such as the vehicle failing to shift gears, shaking or sputtering during acceleration, and grinding or screeching noises. These issues often occur around mileages ranging from approximately 70,000 to 125,000 miles. One incident involved a crash where the vehicle rolled backward unexpectedly, highlighting potential safety concerns. Buyers should be aware of these recurring problems, as they may lead to significant repair costs and potential safety risks.

Severity signals: 1 crash, 0 fire, 0 injury reports

POWER TRAIN

Owners report several power train issues with the 2019 Buick Enclave, notably involving the auto start-stop system and transmission. Complaints frequently mention the vehicle shutting off unexpectedly during stops, causing a loss of power steering and brake assist, with one incident resulting in a crash and injury. Transmission problems are also noted, including sudden shifts to neutral and shuttering at low speeds. These issues appear across a range of mileages, often around 60,000 to 87,000 miles. Potential buyers should be aware of these safety implications, particularly the risk of losing vehicle control.

Severity signals: 1 crash, 0 fire, 1 injury reports

ENGINE

Owners of the 2020 Buick Enclave frequently report issues related to the exhaust system, particularly involving the separation of the mounting bracket from the front exhaust pipe, which often results in holes in the exhaust. These issues lead to symptoms such as rattling noises, strong exhaust smells, and potential entry of exhaust fumes, including carbon monoxide, into the passenger cabin. Several complaints indicate that these problems are similar to those in other model years, yet are not covered under the same recalls or service bulletins. Additionally, one owner reports significant engine-related problems, including oil leaks and a need for engine replacement, accompanied by symptoms like low-oil notifications and sudden acceleration. The safety implications of these issues include the risk of exhaust fumes entering the cabin, which could pose a health hazard to occupants.

ELECTRICAL SYSTEM

Owners report frequent issues with the electrical system of the 2020 Buick Enclave, particularly involving unexpected engine shutdowns while driving, which some describe as a serious safety hazard. Symptoms include the vehicle going into emergency park mode, complete power loss, and difficulties with the transmission shifting into park. These problems often occur around 28,500 to 116,834 miles. One incident involved a crash due to the rear liftgate failing to latch, causing cargo to exit the vehicle. Additionally, some owners experience infotainment and OnStar connectivity issues, as well as inaccurate tire pressure monitoring. These complaints suggest potential safety risks and reliability concerns for prospective used car buyers.

Severity signals: 1 crash, 0 fire, 0 injury reports

ELECTRICAL SYSTEM

Owners report frequent issues with the electrical system of the 2025 Buick Enclave, notably involving malfunctioning infotainment and digital dash displays. Complaints frequently mention the infotainment system going blank or shutting down completely, and the digital dash display failing to show critical information such as speed and safety features. Some issues occur as early as 800 miles into ownership. Safety implications are significant, with one reported crash involving two injuries linked to a complete system failure. Additionally, owners describe overheating problems with the wireless charging tray, raising concerns about potential fire hazards.

Severity signals: 1 crash, 0 fire, 2 injury reports

SERVICE BRAKES

Owners report frequent issues with the brakes on the 2025 Buick Enclave, primarily involving loud squeaking noises at low speeds and premature brake pad wear. These complaints often occur at low mileages, with some owners experiencing issues as early as 400 to 15,000 miles. Several owners describe additional problems such as brake pedal failure, unexpected braking with collision alerts, and malfunctioning ABS, which they note can create unsafe driving conditions. The presence of diagnostic trouble codes, software update requirements, and unresolved safety concerns are also mentioned. This information may be valuable for potential buyers considering the vehicle's reliability and safety.

UNKNOWN OR OTHER

Owners report several issues with the 2020 Buick Enclave, with a notable pattern involving exhaust system failures. Multiple complaints describe exhaust leaks and broken brackets, often occurring around 31,500 miles, leading to increased noise and emissions warning codes. Additionally, some owners experience water leaks from the ceiling, particularly affecting the driver seat, which can lead to safety concerns such as distraction while driving. There are also isolated incidents of the sunroof glass exploding without prior damage and recurring breakage of the rear sunshade clip. These reports highlight potential safety implications and repair costs, which prospective buyers should consider.