Buick Encore loss of power problems

Filed Mar 20, 2026 · Engine · 88,000 miles · TX

The contact owns a 2017 Buick Encore. The contact stated that while driving at an undisclosed speed, the vehicle experienced a sudden loss of power and went into "LIMP Mode". Additionally, there was smoke coming from the rear of the vehicle. The dealer was notified of the issue but declined to service the vehicle because the vehicle had a salvage title. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 88,000.

Filed Mar 9, 2026 · Driver assistance, Engine · 44,000 miles · CT

The contact owns a 2017 Buick Encore. The contact stated that while driving at 40 MPH, the engine was running rough, and the vehicle experienced reduced power. The stabili-trak and the check engine warning lights were illuminated. The vehicle was taken to Auto Zone, where a diagnostic trouble code for a cylinder misfire was retrieved. The vehicle was taken to an independent mechanic, where the cylinder #1 ignition coil and spark plug were replaced, but the failure persisted. The mechanic determined that the engine might need to be replaced; however, the mechanic did not specialize in engine diagnostic tests. The manufacturer was notified of the failure and referred the contact to the dealer for a diagnostic test. The vehicle was taken to the dealer, where it was diagnosed, and it was determined that the engine needed to be replaced. The contact related the failure to GM Special Coverage Number: N232395330; however, the manufacturer informed the contact that the VIN was not included, and the contact was referred to the federal safety agency Hotline for assistance. The vehicle was not repaired due to the cost. The failure mileage was approximately 44,000.

Filed Jan 7, 2026 · Electrical, Engine · OH

I was stopped at a traffic light and began moving forward to make a turn into traffic. As I activated my turn signal and started to proceed through the intersection, the vehicle suddenly stalled and shut off without warning, causing an immediate loss of power while the vehicle was in motion. Another vehicle was entering the intersection at the same time, creating a near-collision situation. I was forced to restart the vehicle in traffic. The incident occurred within less than 250 miles of purchasing the vehicle. The vehicle had recently received an oil change and inspection. No warning lights or messages were observed prior to the stall. This event created a serious safety risk.

Filed Jan 2, 2026 · Engine · AZ

After filling up fuel vehicle starts and stalls out. This occurs while driving at stop signs. And also while driving loss of power. There is something wrong in the engine, timing belt, fuel, etc.

Filed Dec 28, 2025 · Acceleration, Suspension · OH

When I'm driving sometimes the car seems like it's about to cut off or something & the check engine light plus stabilizer track message bones on & I start losing power & it's happened more than 10 times ! I let the car sit for a few minutes & it works !

Filed Nov 17, 2025 · Driver assistance · 20,401 miles · TX

The contact owns a 2018 Buick Encore. The contact stated that while driving at 40 MPH, the vehicle lost power. The Stabili-trak warning light was illuminated. The vehicle was taken to a dealer where the failure however, where the failure was not duplicated. The vehicle was taken to the same dealer and was diagnosed and determined that the brake sensor needed to be replaced. The vehicle was repaired, but the failure reoccurred approximately 6 months later. The vehicle was taken to an independent mechanic, where an unknown code was cleared. The contact stated that a month after the code was cleared, the failure reoccurred. The manufacturer was not notified of the failure. The failure mileage was approximately 20,401.

Filed Nov 11, 2025 · Engine · OH

Component failure: the engine timing chain. Yes, it is available for inspection. Safety risk: vehicle hesitated and lost power in traffic, causing my vehicle to automatically slow down where I was no longer driving at the speed limit. My safety and other drivers around me was compromised as this could have caused a major accident should I have been rear ended. I had it towed to lambert buick, cuyahoga falls, ohio. They diagnosed a timing chain malfunction which was confirmed by dealership diagnostic testing. I was advised not to drive vehicle due to engine damage potential. I had it towed back to my home and have not driven it since. Vehicle has not been inspected by the manufacturer, police, insurance or anyone else. There was no warning, messages or any symptoms prior to the engine timing chain issue. A warning light only came on when the car hesitated and lost power in traffic.

Filed Oct 3, 2025 · Fuel system · OR

I've been dealing with a frustrating car issue lately where my vehicle keeps stalling and hesitating during acceleration - whether I'm pulling away from a stop or trying to pick up speed on the road. After getting it checked out, my mechanic determined that the high pressure fuel pump control module is the culprit and needs replacement. The problem is, we're stuck waiting for the part because Buick has it on backorder indefinitely. What's particularly concerning is that GM recently issued a recall for this exact same fuel pump issue on certain models, but somehow my VIN number didn't make the cut. I strongly believe it should have been included, especially considering the safety implications here. When this fuel pump control module fails, it can completely cut off fuel flow to the engine, which creates a serious traffic safety hazard. Nobody wants their car suddenly losing power while merging onto a highway or navigating through an intersection. This isn't just an inconvenience - it's a legitimate safety concern that affects real people on real roads every day.

Filed Sep 15, 2025 · Engine · CO

The contact owns a 2015 Buick Encore. The contact stated that while depressing the accelerator, the vehicle hesitated before accelerating. The contact became aware of oil underneath the vehicle on the driveway, resulting in a complete loss of power. The vehicle leaked oil and lost the vehicle lost power twice. The check engine warning light was illuminated. The contact inspected the vehicle and determined that the mass air flow sensor had failed. The MAF sensor was replaced twice, the Oxygen sensors were replaced three times, and the turbocharger was replaced once. The failures persisted. The manufacturer was not informed of the failure. The failure mileage was unknown.

Filed Jul 25, 2025 · Engine · MO

turbocharger failures, which can result in reduced acceleration, power loss causing problems while trying to merge onto traffic and also in hill climbing. My understanding this is a common problem with the Buick Encore and has not been recalled. My garage said they have repaired a "ton" of these turbo in Buick Encores. Why no recall???