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What 25 owners told NHTSA about the 2024 Mercedes-benz E-class Cabrio

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 (25)Crash / fire / injury (3)Electrical system (12)Driver assistance (3)Engine (3)Speed control (3)Fuel system (2)Lights (2)Steering (2)Wheels (2)Brakes (1)Lane Departure (1)

1 of 25 complaints match · Lane Departure · clear filters

Jun 25, 2026SteeringElectrical systemLane Departure

The lane-keeping assist function (In-Lane control, part of the driver-assistance suite) does not turn off when commanded. The driver selects the control to disengage, and the system remains active and continues to apply steering input. This is a recurring condition and it is getting more frequent. A driver-assistance steering function that cannot be switched off removes driver authority over the steering at the moment the driver is trying to take control, which is a safety risk in normal driving and especially during evasive maneuvers, lane changes, and construction or debris avoidance. The condition was reported to the selling dealer in writing on June 17, 2026 as part of a recurring driver-assistance concern. During the subsequent B service visit the dealer inspected the radar sensors and applied software updates to the steering column module, steering wheel, electric power steering, and driver-assistance control units. The dealer could not duplicate the concern and did not perform a system calibration. The condition has continued after that service. The vehicle has approximately 17,428 miles. There has been no crash, no injury, and no fire. A separate recurring concern on the same vehicle: it reports its doors as unlocked when they are in fact locked, and issues a vehicle-unlocked notification while the vehicle is locked. This now occurs on a near-daily basis and was also reported to the dealer on June 17, 2026 with no diagnosis on record.

NHTSA ODI 11746468

Working with the data? Download all 25 complaints as CSV · fetched from NHTSA July 26, 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 Mercedes-benz E-class Cabrio verdict →