2018 Buick Encore Reliability Report

Owners report that the 2018 Buick Encore frequently experiences power steering failures, often accompanied by brake loss and vehicle shaking. Complaints commonly describe scenarios where the vehicle loses control capabilities, with dashboard warning lights activating and, in some cases, the engine shutting off unexpectedly. These issues typically occur without prior warning, and some reports mention occurrences at highway speeds, leading to at least one crash and injury. The problems often emerge at around 20,000 miles, with multiple owners expressing fear and frustration over recurring malfunctions despite repair attempts. Potential buyers should be aware of these serious safety implications and the challenges in diagnosing and resolving the issues.

Owners of the 2018 Buick Encore report several electrical system issues, with common complaints involving dashboard overheating and persistent odors after extended driving. Multiple reports mention problems with the cooling fan remaining on after the vehicle is turned off, leading to battery drainage and potential overheating of the fuse block. Some owners experience intermittent starting issues and loss of power, with one account noting a complete power loss that resolved itself. Additionally, there are reports of the remote start system malfunctioning and unusual noises when reversing. Safety implications include the risk of engine fire due to the fan assembly error, though no crashes or injuries are reported. These issues appear across various mileage ranges, with owners expressing concerns about manufacturing errors.

Owners of the 2018 Buick Encore report issues related to the engine and engine cooling system, with multiple complaints highlighting problems with the turbocharger and associated components. Common symptoms include unintended loss of motive power at various speeds, as well as illuminated check engine lights accompanied by decreased fuel efficiency. Issues such as loose turbo hose clamps and oil leaks from the oil cooler pipe are frequently mentioned, with failure mileages reported around 54,000 miles and significantly higher at approximately 152,000 miles. While there are no reports of crashes or fires, the loss of power while driving suggests potential safety concerns. Buyers considering a used model should be aware of these recurring issues and check for any related repairs or maintenance history.

Owners of the 2018 Buick Encore report issues with the service brakes, with some describing unintended acceleration when attempting to stop, which in one case resulted in a crash. Another common issue involves the vehicle stuttering and shutting off when braking, posing a potential hazard as it increases the risk of being hit by other vehicles. Additionally, some owners experience brake malfunctions where the brakes lock while driving, causing the vehicle to slow down unexpectedly. These issues are reported to occur at various mileage levels, and repairs attempted by dealerships sometimes fail to resolve the underlying problems. Safety implications include loss of control and increased risk of accidents, which prospective buyers should consider.

Owners of the 2018 Buick Encore report issues related to the fuel/propulsion system, with two specific problems noted. One complaint describes difficulty refueling due to water accumulation at the gas port during rain, suggesting a design issue that may impede fueling. Another owner reports a strong gasoline odor followed by a crack in the high-pressure fuel line, leading to significant fuel leakage near the right rear tire. This incident required a costly repair, involving the replacement of a plastic fuel pipe and dropping the fuel tank. The fuel line issue, in particular, poses a potential safety risk due to the possibility of ignition. No specific mileage or timeline patterns emerge from the complaints, but the issues highlight potential concerns for buyers considering this model.

Owners of the 2018 Buick Encore report issues with the electronic stability control system, particularly during rainy conditions. Complaints frequently mention the vehicle's OnStar system sending alerts for the antilock brakes and stability system, with some owners experiencing the vehicle failing to start despite multiple attempts, often resolved only by using remote start. Another common symptom is the StabiliTrak warning light illuminating, accompanied by a loss of power while driving, typically occurring around 20,401 miles. In some cases, replacing the brake sensor temporarily resolves the issue, but the problem may reoccur. No reports indicate crashes or loss of control, but the recurring nature of these issues could be of concern to potential buyers.

Owners of the 2018 Buick Encore report issues related to vehicle speed control, with two primary symptoms. One complaint describes a crash involving sudden unintended acceleration where the vehicle accelerated unexpectedly while braking, resulting in a collision with a wall. Another complaint details a loss of motive power, where the vehicle displayed an "Engine Power Reduced" message and could not exceed 25 MPH, attributed to a failed accelerator pedal. These issues are reported at mileage around 41,000, indicating potential risks of loss of control and limited vehicle performance, which are critical considerations for prospective buyers.