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What 389 owners told NHTSA about the 2018 GMC Acadia Denali

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (389)Crash / fire / injury (10)Transmission & drivetrain (162)Electrical system (108)Engine (32)Steering (24)Brakes (21)Electronic Stability Control (esc) (12)Fuel system (9)Lane Departure (6)Backup camera & sensors (5)Seats (5)

2 of 389 complaints match · Steering · crash/fire/injury only · clear filters

Aug 1, 2024SteeringSuspensionTransmission & drivetrainCrash1 injury

On July 26, 2024, I was driving my 2018 Acadia, with my cruise control set to 48 in a 45 MHP zone. Nearing a bad curve, I sneezed. When this happened, I tapped the brakes to disengage the cruise control, my passengers side tires exited the road and with both hands on the wheel I tried to slowly bring my tires back to the road. However, I was unable to gain control and totaled the vehicle. A witness stated that she heard a loud pop coming from the vehicle before the wreck happened. I later learned from my insurance that the vehicle had a Recall 17V516000 on it and I was never made aware of it. I believe that this was a factor in me not being able to control the vehicle.

NHTSA ODI 11605906

Mar 23, 2019SteeringSpeed controlBrakesCrash4 injuries

IN MOTION ON THE HIGHWAY 401 NORTH ONTARIO CANADA, THE VEHICLE ERRATICALLY INCREASED SPEED AND BRAKES WERE NOIR EFFECTIVE, LOST CONTROL OF THE STEERING WHEEL WHICH CAUSED A MASSIVE ACCIDENT INVOLVING MULTIPLE CARS AND RESULTED IN MULTIPLE INJURIES. *DT

NHTSA ODI 11191133

Working with the data? Download all 389 complaints as CSV · fetched from NHTSA July 25, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2018 GMC Acadia Denali verdict →