2021 Buick Encore GX

53 complaints on file, page 1 of 3.

1. Filed Sep 18, 2026Failure Sep 1, 202687,402 milesForked River, NJBack over prevention

   The contact owns a 2021 Buick Encore. The contact stated that after starting the vehicle, the radio display screen was blank. While reversing, the rear-view camera briefly displayed an image before going blank. The manufacturer was made aware of the failure by phone. The failure mileage was approximately 87,402.

   NHTSA complaint 11765233
2. Filed Aug 30, 2026Failure May 1, 2026Los Osos, CAPower train

   Vehicle does not recognize it is in Park even when the shifter is placed in that position. As a result, the vehicle cannot be turned off. GM has issued a technical service bulletin for this issue, but has not yet performed a recall.

   NHTSA complaint 11760794
3. Filed Aug 29, 2026Failure Aug 1, 2026Cardington, OHAdaptive cruise control, Warning, Assist

   The Frontview camera or its software is the issue. It allows the car to drift outside of the lane on both sides of the car before warning and or pulling you back over but then it just pulls you to the other line and lets you cross it back and forth if you let it and every time crossing the line. Extremely dangerous if you don't know that it's not functioning correctly. Also her adaptive cruise control doesn't work and I know for a fact it uses the same camera to work to be able to tell when a vehicle is ahead of you which her car does show the symbol for when a car is ahead of you but it doesn't slow down her cruise control leaving a gap between the 2 cars so again if you didn't pay attention you could smash right into the car ahead of you. I took it to one Buick dealer and they said there was nothing they could do but after research I learned it can easily be reprogrammed with the right obd2 computer and either driving it to recalibrate or doing a static calibration in a shop. I do know that there are service bulletins slightly related to this.

   NHTSA complaint 11760679
4. Filed Jul 8, 2026Failure Jul 2, 2026Somerset, NJElectrical system, Engine

   While driving check engine suddenly illuminated following by a "warning reduced engine power" message. Car began driving sluggish and driving over 35mph caused serious trembling. After multiple diagnosis with several engine codes pointing to issues with ECM, and mass air flow sensor, and the wiring affliated . I took the vehicle to the GMC dealership to get vehicle serviced and was told the wiring had broken and melted which caused the check engine to come on and the vehicle to drive the way it did. The cause was the zip tie being tied too tight as stated in GMs own bulletin number 22-NA-008. This should be a bulletin it should be a recall!

   NHTSA complaint 11749150
5. Filed Jun 29, 2026Failure Jun 26, 202681,000 milesBeaver Falls, PAService brakes, Hydraulic

   The contact owns a 2021 Buick Encore GX. The contact stated that while driving at an undisclosed speed, the brake pedal was firm while depressed, with several unknown warning lights illuminated. The vehicle was taken to an independent mechanic, and several unknown diagnostic trouble codes were retrieved. The vehicle was then taken to the dealer, but the vehicle was not yet diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 20V588000 (Service Brakes); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 81,000.

   NHTSA complaint 11747114
6. Filed Jun 8, 2026Failure Jun 3, 2026Palm Desert, CAVehicle speed control

   Due to defective LIN BUS 2 failure to read mass air flow sensor, vehicle suddenly goes into limp mode. This speed control issue is documented in GM Technical Service Bulletins (TSBs) #22-NA-008 and PIP5934, 2022.

   NHTSA complaint 11742772
7. Filed May 5, 2026Failure May 1, 2026Zebulon, NCPower train

   A 2021 Buick Encore GX with 66,828 miles experienced sudden transmission failure while driving. The vehicle lost forward gear engagement and began slipping, creating an immediate safety risk to the driver and other motorists due to unexpected loss of vehicle propulsion and control. The vehicle was diagnosed by an authorized GM dealership. Diagnostic codes P2714 (Transmission Control Solenoid Valve 4 Stuck Off) and P0700 (Transmission Control Module Request) were confirmed. The transmission fluid was found to have a burnt odor indicating severe internal damage. The check engine light was the first warning symptom, followed by slipping and loss of forward gear. General Motors previously issued Technical Service Bulletin 24-NA-009 in March 2024 specifically identifying DTC P2714 on the 2021 Buick Encore GX as a known internal defect affecting model years 2020 through 2024. This bulletin confirms GM was aware of this defect prior to this vehicle's failure. Despite issuing this bulletin, GM has not issued a recall, leaving owners of affected vehicles responsible for repairs caused by a known manufacturer defect.

   NHTSA complaint 11735946
8. Filed May 3, 2026Failure Feb 10, 2026Port st lucie, FLEngine

   The 1.3L turbo caused metal fragments to get into my engine which in return caused the transmission to fail. My 2021 Buick encore gx has been in the shop since early February 2026 at Garber Buick in Fort Pierce Florida. The first diagnosis was solenoids needed to be replaced, after the solenoids were replaced they told me the engine needed to be replaced, once the engine was put in Garber Buick told me the transmission now needed to be replaced. GM motors have been involved I have case number and a case manager who has informed me that not only do they want me to pay 5,600 dollars after the first quote for the engine was 9,800 but they brought that price down to 5,600 they now since its the transmission want me to pay another 6,000 even though the car is only 2021 and the turbo caused all of this to happen. I have done some more research and GM has multiple lawsuits against them for turbo and transmission failures where GM told dealers to downplay issues.

   NHTSA complaint 11735353
9. Filed Apr 23, 2026Failure Apr 6, 2026Reynoldsburg, OHEngine, Power train, Vehicle speed control

   Turbocharger is defective. Reduced engine power. Engine Power reduced shows up on my dashboard. I bought the car brand new at Lindsey Buick in Ohio. This car is too young for this problem. Lindsey Buick and GM need to stand up to accountability and transparency when it comes to delivering top quality products. My vehicle almost caused a horrific accident by not accelerating fast enough. I am [XXX] , a widow, and in need of my car being fixed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11733173
10. Filed Apr 18, 2026Failure Apr 14, 2026Port St Lucie, FLEngine, Fuel/propulsion system

    My vehicle suddenly stalled and completely shut off while I was driving. No warning lamps, messages or other symptoms to alert me there was any engine issues. I was definitely put in danger as I was driving at rush hour in a 6 lane busy US 1 Federal Highway. The vehicle was stalled, without any power, in the middle lane with cars and trucks swerving around me at the last minute. I called 911 immediately and they dispatched cruisers to help push my vehicle across 4 lanes of traffic. This meant having to block 4 lanes of moving traffic. It was a long 10 minutes of waiting as angry drivers were leaning on their horns in frustration. AAA flatbed towed my vehicle to a near mechanic's shop, but it was after hours and had to be left there until morning. The mechanic inspected the problem and confirmed the issue was a fuel module and fuel pump failure. How does this happen without any alerts to the driver? How can you prepare a driver of such a serious engine failure putting that driver and other surrounding drivers at such a serious risk? This should be a safety recall and fixed by the dealer without charge to the driver. That is, if the driver is still alive.

    NHTSA complaint 11732027
11. Filed Mar 26, 2026Failure Mar 18, 2026Colorado Springs, COUnknown or other

    Shifter to park message showing on dash and Vehicle will not stop beeping and drains the battery and you can not lock the car. This is a know problem with Buick Encore 2023 and Buick has not recalled it and did not cover the cost of the repair, which cost me $659.68 plus tax.

    NHTSA complaint 11727335
12. Filed Mar 10, 2026Failure Mar 10, 202658,000 milesMaple Grove, MNPower train

    The contact owns a 2021 Buick Encore GX. The contact stated that while attempting to park the vehicle, the message to “Shift to Park” was displayed while the vehicle was already shifted in park(P). The contact stated that several attempts to shift to park were needed to clear the message. On several occasions, the contact drove the vehicle and then shifted back to park(P) for the message to be cleared. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 58,000.

    NHTSA complaint 11723351
13. Filed Jan 28, 2026Failure Dec 2, 202517,500 milesMaricopa, AZElectrical system, Power train

    The contact owns a 2021 Buick Encore GX. The contact stated that during a routine oil change at the local dealer, the contact informed the dealer that while in the park or shifting to park, the engine was shutting off unexpectedly. The message to “Shift to Park” was displayed and the vehicle was difficult to turn off. The contact wiggled the ignition to shut off the vehicle. There were no warning lights illuminated. The failure persisted over time. The contact was concerned about being stranded due to the failure. The local dealer was contacted, and it was determined that there was no warranty or recall coverage on the vehicle. The vehicle was not diagnosed or repaired. The contact had scheduled an appointment for a diagnostic test. The manufacturer was contacted and confirmed that there was no warranty coverage on the vehicle, and no assistance was provided. The failure mileage was approximately 17,500.

    NHTSA complaint 11713934
14. Filed Jan 12, 2026Failure Dec 19, 2025Seattle, WAElectrical system, Power train

    When trying to park/shut off, the vehicle gives ‘shift to park’ error message upon shifting to park and won’t shut off or when starting will give ‘shift to park’ error message and not start. This seems to be a common issue with this vehicle model…we could really use a recall

    NHTSA complaint 11710497
15. Filed Jan 5, 2026Failure Oct 1, 2025Montgomery, ALEngine, Fuel/propulsion system

    Trying to understand why a recall was not done on an engine issue on this car and instead GMC chose to send out 2 letters in 2024 detailing the problem that "might" happen with the engine losing power while driving and for owners to "carry" the letters in the glove compartment of the vehicle so the dealership could be aware of the issue. You were told to not bring the car to be serviced unless the issue was obvious. Well it happened when I was out of state and had to immediately find a GMC dealership to fix the issue for which my car was in a dealership in [XXX] for approximately one month. If the proper recall would have been made I would NOT have driven the car out of state prior to getting it fixed. I had family members in the car with me at the time and to lose power on an interstate was very scary to say the least. I feel that GMC failed it's customers with this vehicle and I will never buy another GMC vehicle or for that another vehicle US made vehicle. The issue was fixed at GMC's expense but they are now failing to reimburse proper funds for the rental I had to use putting a burden on my finances...be that as it may I am totally disappointed with the Buick Encore GX 2021. You try to support the "american made label" and this is where it got me for trying to do the right thing...I feel no one is looking out for the consumers on this particular issue b/c I'm pretty sure I'm not the only one it has happened to...A RECALL SHOULD HAVE BEEN DONE ON THIS ISSUE..!! This is 2021 with fewer than 48,000 miles and up to date services by reputable GMC dealerships since I have had the car. The case # with GMC for this issue is XXXINFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    NHTSA complaint 11708921
16. Filed Jan 3, 2026Failure Dec 1, 2025Lindenhurst, ILService brakes

    Brake System Control Module Replacement - The brake system control module needs replacement due to a fault detected with 10 volts on terminal 1. Replacing this component can help maintain proper functionality of the brake system and ensure consistent performance. Why would this all of a sudden be faulty after almost 5 years?

    NHTSA complaint 11708527
17. Filed Dec 12, 2025Failure Dec 11, 202552,590 milesMagnolia, TXExhaust system

    The contact owns a 2021 Buick Encore GX. The contact stated while depressing the brake pedal to make a right turn, there was an abnormally loud popping and scrapping sound coming from underneath the vehicle. The contact pulled over to the side of the road. Upon exiting and inspecting the vehicle, the contact became aware that the exhaust manifold had detached from the vehicle. The vehicle was drivable and was currently parked at the residence. The vehicle was not diagnosed or repaired by a dealer or an independent mechanic. The manufacturer was not notified of the failure. The approximate failure mileage was 52,590.

    NHTSA complaint 11704676
18. Filed Nov 11, 2025Failure Mar 1, 2025Solon, OHUnknown or other

    2021 Buick Encore with 25000 miles. Warning message “SHIFT TO PARK” while vehicle is in park. Dealership says shifter and knob need replaced at an out of pocket cost to me of nearly one thousand dollars. GM has already settled claims for this problem with Chevrolet owners.

    NHTSA complaint 11698770
19. Filed Oct 15, 2025Failure Oct 15, 2025Temple Hills, MDEngine

    Evap leak detection pump failed at 78,871 miles. 2022 models and beyond are covered for this defect.

    NHTSA complaint 11693596
20. Filed Oct 15, 2025Failure Oct 15, 2025Temple Hills, MDEngine

    Evap leak detection pump failed at 78,871 miles. 2022 models and beyond are covered for this defect.

    NHTSA complaint 11693594