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What 17 owners told NHTSA about the 2024 Lexus GX 550

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 (17)Crash / fire / injury (1)Electrical system (5)Engine (4)Brakes (3)Transmission & drivetrain (2)Airbags (1)Body & structure (1)Driver assistance (1)Speed control (1)Steering (1)Visibility & wipers (1)

1 of 17 complaints match · Steering · clear filters

Mar 10, 2025SteeringTransmission & drivetrainEngine

NEW 2024 GX550, less than 2 months and 3,000 miles of ownership- accelerating to 40 mph and vehicle completely shut off, jolting me forward. All lights on dash lit up, "power steering failure, engine failure, not safe to drive." It was all I could do to get it off to the shoulder of the road. Extremely dangerous. Had vehicle towed to local Lexus dealer. After 2 weeks master tech determined timing chain snapped causing catastrophic engine failure. Now we wait for Lexus corporate to advise them on how to fix. Both dealer and corporate blaming each other for the lack of communication. Vehicle has been sitting in dealer parking lot for 3 weeks with no timeline and no communication. I was told by head service tech this is #5 in the country for this year, make, and model of timing chain snap resulting in engine failure. Neither parties are doing anything to make it right. This is an $85,000 vehicle.

NHTSA ODI 11647369

Working with the data? Download all 17 complaints as CSV · fetched from NHTSA July 19, 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 2024 Lexus GX 550 verdict →