2020 Buick Encore GX Complaints

POWER TRAIN — Filed 06/04/2026

Transmission would not connect with the engine. La Fontaine dealership in Saint Clair. Said I need a new transmission cost $14,000. It has 59823 miles under the vehicle.

UNKNOWN OR OTHER — Filed 03/16/2026

My 2020 Buick Encore GX which has only 30,600 had the "Shift to Park" message appear on the dashboard screen and my car was not turning off properly. I read online that it is a widespread known issue: however, I had to pay 630.14 to fix the GM well know widespread issue so I can turn off my vehicle. This should be covered FREE of charge by GM as they are aware of the issue affecting the 2020 Buick Encore GX.

POWER TRAIN — Filed 03/23/2026

I am writing to formally report a serious mechanical failure involving my vehicle and to request further review and assistance. While operating my vehicle, it unexpectedly stalled in the middle of an intersection, creating a significant safety hazard. At the time of the incident, the check engine light illuminated and the RPMs surged to a range between 6 and 8. I was able to safely move the vehicle to the side of the road, place it in park, and have it towed to a dealership for inspection. Following their evaluation, I was informed that the transmission requires replacement. I have since become aware of a recall related to transmission issues; however, I was advised by a Buick representative that my VIN is not included in the recall. Given that my vehicle is experiencing the same or a substantially similar failure, this determination raises concerns and warrants further review. I have consistently adhered to all recommended maintenance schedules and have taken proper care of my vehicle. Based on the circumstances, I respectfully request a thorough reassessment of my case, including reconsideration for coverage or assistance with the necessary repairs. I appreciate your prompt attention to this matter and look forward to your response.

POWER TRAIN,ELECTRICAL SYSTEM — Filed 02/19/2026

My 2020 Buick Encore GX is showing a message with accompanying ding ding sounds "Shift to Park" after I put my car in park. This malfunction will not allow the car to be locked. I see there are many complaints and lawsuits that GM has not attended to. How do we get GM to initiate a recall on something they are and were well aware of.

POWER TRAIN,ENGINE — Filed 02/16/2026

2020 Buick Encore GX; pulling out of a service station, my check engine light illuminated, and message on cluster stated: Engine Power Reduced. I loss throttle response for accelerating. Accelerator pedal was pushed to the floor and no acceleration. Vehicle entered limp mode. Drove 15 miles from service station to my home, in limp mode, unable to accelerate. Called a technician mechanic who check for Diagnostic Trouble Codes; DTC P0299 Turbocharge/Supercharge "A" Under boost condition; is Confirmed, Pending, and Permanent code. Loss of power to Power Train, unable to accelerate.

POWER TRAIN,ELECTRICAL SYSTEM — Filed 11/03/2025

SHIFT INTO PARK WARNING WHEN CAR IS IN PARK

POWER TRAIN — Filed 09/15/2025

Powder Train When parking the car in garage, placed vehicle in park, then turned vehicle off, received a message on dash "SHIP TO PARK". The car was in park. Even thought the engine was off, it would now allow radio or lights to shut off util message goes off. Some times several minutes for it to go out. Taken it to the GM dealer ship was told shifter assembly needs replaced. I have learned their currently is a a class action suit for this issue at this time. My car was under warranty for 5 years and was still under the warranty when this happened to me. I don't feel I should have to pay $491.00 out of my pocket.

UNKNOWN OR OTHER,BACK OVER PREVENTION — Filed 10/25/2025

To Whom It May Concern, I am submitting a formal complaint regarding a recurring issue with my 2020 Buick Encore GX (VIN: [XXX] ) related to the “Shift to Park” defect, which is documented in GM’s Technical Service Bulletin 23-NA-119. My vehicle intermittently fails to recognize when it is in park, preventing me from turning off the engine and causing safety and usability concerns. Despite following GM’s recommended steps and scheduling an appointment through Buick Customer Care, I was charged $195 for a diagnostic fee and quoted $495 to replace the shifter assembly. The dealership confirmed the issue matched the bulletin, yet refused to offer goodwill coverage or reimbursement. This expense is a significant hardship. I am still making payments on this vehicle, which is barely five years old. I previously owned a Honda for 20 years without encountering issues like this. Unfortunately, this is not the first time I’ve faced a manufacturer-documented defect with no support. My previous vehicle, a Mitsubishi Outlander, suffered from a known transmission issue that was later part of a class action lawsuit. Despite experiencing the same symptoms, my VIN was excluded. The cost of repair outweighed the value of the vehicle, and I ultimately had to walk away from it as a total loss—leaving me without a car. I am deeply disappointed to now face a similar situation with Buick. I chose this vehicle expecting reliability and support, and I’ve done everything asked of me to address this issue responsibly. I believe GM should be held accountable for this known defect and the financial burden it places on consumers. Thank you for your attention to this matter. Sincerely, [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

ENGINE AND ENGINE COOLING — Filed 10/22/2025

The contact owns a 2020 Buick Encore GX. The contact stated that while driving at an undisclosed speed, the vehicle began to shake with abnormal sounds coming from the engine compartment. The check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed and it was determined that the turbocharger had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the dealer for further assistance. The approximate failure mileage was 51,220.

UNKNOWN OR OTHER — Filed 07/11/2025

I am getting a shift to park message on my Buick. I have to shift through heats multiple times to get it to stop.