2026 BUICK ENCORE GX Complaints

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.

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.

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.

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 .