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What 29 owners told NHTSA about the 2018 Mercedes-benz S-class Hybrid
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.
2 of 29 complaints match · Transmission & drivetrain · clear filters
Jan 22, 2025Transmission & drivetrain
The contact owns a 2018 Mercedes-Benz S450. The contact stated while driving at an undisclosed speed, the gear shifter independently shifted into neutral. The contact had to hold down the gear shifter for about 30 seconds before the system was reset. Additionally, the check engine warning light was later illuminated. The vehicle was taken to the dealer where it was diagnosed with transmission valve body failure. The contact was informed that the transmission valve body needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 89,000.
NHTSA ODI 11637720
Feb 10, 2023SuspensionTransmission & drivetrainFuel systemCrashFire1 injury
Vehicle Check Engine Light turned on a Vehicle Lost power. Vehicle often hesitates upon acceleration. Convertible Top does not close as well intermittently.
NHTSA ODI 11506663
Working with the data? Download all 29 complaints as CSV · fetched from NHTSA July 14, 2026