There are 6 owner-reported engine complaints for the 2020 Buick Encore GXin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
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.
The contact owns a 2020 Buick Encore GX. The contact stated while driving at various speeds, the vehicle lost motive power while depressing the accelerator pedal. The check engine warning light was illuminated. The vehicle had been taken to the dealer on several occasions, and several repairs were performed on the vehicle. The contact stated that the turbo was replaced twice; however, the failure returned after the repairs. The vehicle remained in the possession of the dealer for a month and the dealer determined that the mechanical outline was incorrect, and that the turbo had been installed incorrectly. The manufacturer was notified of the failure but offered no assistance. The vehicle was repaired; however, the contact expressed concern that the failure might occur again, and was fearful of driving the vehicle. The failure mileage was approximately 60,000.
I was driving on the interstate on June 7, 2023 heading to work doing the speed limit of 60 MPH and all of a sudden the check engine light came on and a message stated "Engine Power Reduced" and the engine literally dropped engine power immediately and thankfully there was nobody right behind me and I was able to get off the interstate to a safe place. I called the Buick GMC dealership where I purchased the vehicle and they said to bring it in. They pulled codes on it and it gave a code of "engine under boost" and they said they ran tests on it and could not find anything wrong after 3 days at the shop, they did a software update and told me to come and pick it up. Then not even a week later, I was driving and out of nowhere came the same engine light, message read "engine power reduced" and the engine lost power immediately and I called the Buick GMC dealership again and they said to bring it back in and it's there now. I called today to check in and they said they are going to test the Turbo on it and order parts, etc. but they still do not have a definitive answer as to what's wrong with it yet. I bought my 2020 Buick Encore GX new in November 2020 and it has about 26,000 miles on it. No recalls have been made on my VIN model - I am afraid to even drive this car again and get stuck somewhere away from help or at night - someone could have rear ended me when I lost power on the interstate doing 60 MPH and killed me!!!
I was driving on the interstate on June 7, 2023 heading to work doing the speed limit of 60 MPH and all of a sudden the check engine light came on and a message stated "Engine Power Reduced" and the engine literally dropped engine power immediately and thankfully there was nobody right behind me and I was able to get off the interstate to a safe place. I called the Buick GMC dealership where I purchased the vehicle and they said to bring it in. They pulled codes on it and it gave a code of "engine under boost" and they said they ran tests on it and could not find anything wrong after 3 days at the shop, they did a software update and told me to come and pick it up. Then not even a week later, I was driving and out of nowhere came the same engine light, message read "engine power reduced" and the engine lost power immediately and I called the Buick GMC dealership again and they said to bring it back in and it's there now. I called today to check in and they said they are going to test the Turbo on it and order parts, etc. but they still do not have a definitive answer as to what's wrong with it yet. I bought my 2020 Buick Encore GX new in November 2020 and it has about 26,000 miles on it. No recalls have been made on my VIN model - I am afraid to even drive this car again and get stuck somewhere away from help or at night - someone could have rear ended me when I lost power on the interstate doing 60 MPH and killed me!!!
The contact’s mother-in-law owns a 2014 Jeep Cherokee. The contact stated while his mother-in-law was driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the PCV valve needed to be replaced. The vehicle was not repaired. The contact stated that on another occasion while his mother-in-law was driving, the vehicle started sputtering, overheating, and lost motive power. The vehicle remained at the location. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 75,000.
STARTED HAVING TROUBLE LAST WEEK WITH THE FUEL GAUGE AND A CHECK ENGINE LIGHT. TOOK THE CAR IN TO HAVE IT SERVICED AND THEY FOUND THAT RODENTS HAD CHEWED THROUGH THE HARNESS LOCATED BY THE FUEL. COST $850 TO REPAIR WHICH WAS NOT COVERED UNDER WARRANTY. HAD THE CAR BACK TWO DAYS AND WENT TO USE THE CAR AND IT COMPLETELY STOPPED FUNCTIONING ONCE WE PULLED OUT INTO TRAFFIC. WE LIVE ON A HIGHLY TRACTOR TRAILER TRAVELED ROAD AND HAVING THE CAR JUST STOP WORKING COULD HAVE ENDED IN AN ACCIDENT IF A CAR WAS COMING FROM EITHER DIRECTION. MY SON WAS IN THE PASSENGER SEAT AND I AM INCREDIBLY UPSET THAT THEY COULD HAVE BEEN HURT. WE NEEDED TO CALL THE POLICE AND A TOW TRUCK WITH MY YOUNGEST SON IN THE CAR. RECEIVED A CALL FROM THE DEALERSHIP AFTER INSPECTION TO FIND OF THE SAME HARNESS HAS BEEN CHEWED THROUGH AGAIN. THE HARNESS APPARENTLY IS A SOY BASED PRODUCT. WE ARE BEING TOLD ONCE AGAIN THIS IS NOT COVERED UNDER WARRANTY AND MY BIGGER CONCERN IS HOW THIS IS GOING TO STOP HAPPENING. THIS DOES NOT SOUND LIKE AN OUTSIDE INFLUENCE BUT RATHER A MANUFACTURING DEFECT. USING A SOY BASED PRODUCT MAYBE CHEAPER TO MANUFACTURE AND BETTER FOR THE ENVIRONMENT BUT IT'S GOING TO MAKE THE CAR COMPLETELY UNSAFE FOR MY FAMILY TO BE IN. IF THE HARNESS IS GOING TO BE MADE OUT OF A SOY BASED PRODUCT AND I BELIEVE THAT THIS SHOULD BE SOMETHING NOW COVERED UNDER WARRANTY AND NOT EXPECTED FOR US TO PAY OUT OF POCKET FOR.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on May 4, 2026