2026 Buick Encore GX problems

Filed Nov 9, 2026 · Driver assistance · CA

Even after turning off all the “safety” features switches and also pulling off the abs fuse the car still make unwanted intervention (brake and acceleration) for every small single road inclination, road crown, small bumps, manhole cap, road drain lines etc. every single small road stuff is a reason for exaggerated intervention that throws the car to the neighbor lane making the driver counter steering every single second to avoid accident. It’s a nightmare driving cars nowadays. It’s not only Buick, GM, Ford etc. it’s multi brand vehicles issue. I rent cars to work and the same exact behavior is happening in all of the brands. They are probably sharing the same software that make the calculation of the G-sensor, yaw sensors, lateral sensors and speed sensors. This software is a life threatening and dangerous it’s make people driver scare, just look at the freeway cameras and you will see people not driving at the center of their lanes. It’s because they are leaving space to act fast when their cars behave weird. Can someone please do something to stop all this life threatening boom of machines intelligence that do exactly the opposite. Omg people who have to work full time in their car are getting crazy. Wtf

Filed Nov 6, 2026 · Engine · FL

The auto-stop doesn’t always work when idling at stop signs or stoplights. When I release the brake pedal the engine stalls and fails to restart out of “Auto-Stop”. The dashboard goes completely blank. I then have to shift into park and restart the engine. This is a serious safety concern I have taken the vehicle to the dealership twice and they indicate they do not know how to fix the issue.

Filed Nov 5, 2026 · Brakes · IL

I am submitting this safety complaint regarding my 2026 Buick Encore GX purchased in December 2025. I first reported persistent front brake squeaking on June 10, 2026, at 5,539 miles. The dealership inspected the brakes but reported no issue found. On September 8, 2026, at 7,748 miles, I again reported brake squeaking under both hot and cold conditions. The dealership was unable to duplicate the concern and suggested the semi-metallic brake pads could cause squeaking. On October 21–22, 2026, at 9,896 miles, I reported that the brakes were squeaking constantly. The dealership cleaned and re-greased the rear brake pads. However, the concern continued. On October 30, 2026, at 10,349 miles, I again reported the brake noise, and the dealership was unable to duplicate the concern. Despite multiple dealership visits, inspections, and attempted repairs, the brake squeaking remains unresolved. I am concerned about the reliability and safety of my vehicle, particularly when transporting my twin daughters. As a single mother who worked hard to purchase this vehicle, I expected dependable and safe transportation for my family. The continued unresolved brake concern has significantly impacted my confidence and comfort driving this vehicle. I am requesting that the federal safety agency document and review this recurring brake concern to determine whether it may represent a potential safety defect. I have retained service records and supporting documentation of my repeated complaints and repair attempts.

Filed Aug 25, 2026 · Acceleration, Steering · 17,153 miles · VA · crash

The contact rented a 2026 Buick Encore GX. The contact stated that while making left or right turns on several occasions, the vehicle accelerated and jerked. The contact stated that on one occasion while making a left turn, the vehicle jerked and accelerated, and the vehicle crashed into a column in a parking garage. No injury was sustained. A Police report was not filed. The vehicle was towed to the rental car location. The contact was unaware of whether the vehicle was diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 17,153.

Filed Aug 18, 2026 · Engine · MO

When the vehicle is at a stop, with the car in drive, the vehicle will shut off. The vehicle needs to be put back into Park and restarted. It then sometimes shuts off again and I have to repeat the sequence. This happens when it is in idle load reduction.... For gas saving.

Filed Aug 1, 2026 · Electrical, Engine · IN

When the vehicle engages auto-off at a stoplight, the engine stalls when trying to reengage. The engine also struggles to engage from a manual start, sometimes needing to try starting the engine three or four times before it will turn on. Two Buick dealerships inspected the vehicle and confirmed GM has an open investigation on the issue and that there is currently no fix. They recommended disabling the auto-off in the meantime. There is no temporary fix for the manual ignition issue.

Filed Jul 22, 2026 · Engine · MD

The vehicle is equipment with a Stop/start when brake is applied and vehicle is at a stop, the engine turns off. Randomly the engine does not restart when brake is released and accelerator is pressed, vehicle is required to be put in park and restarted . This has happened on the highway while in traffic, the engine did not restart and required to be put in park and restarted while traffic flowed around me. The other occasion was came to a completed start at a traffic light, again the released the break and pressed the accelerator and the vehicle did not restart . Again had to put in park and restarted while traffic with cars honking . This failure has put us in danger. Vehicle brought to Buick dealer twice , same answer could not recreate, no codes displayed .