The driver's side seat failed. Due to a seat electrical harness failure the seat became stuck and neither the seat seatback or headrest could be moved. I could comfortably still reach steering wheel and pedals but my wife could not safely do so. The car has approximately 36k miles on it. I paid to repair this $831 negotiated down from $1600+. This is a pressing NHTSA issue because on the repair invoice the technician noted that a 40 amp fuse had been installed in a 30 amp socket. Presumably it came from the factory in this condition. The car has only been serviced by MBZ dealers - 2, palm springs and sandiego- and to my knowledge no one has touched the fuses or box. The electrical?system from the factory is running 40 amps on a circuit designed for 30. This is a manufacturing or design defect which will likely as here, cause failure and could possibly at least to my non electrical engineer's mind cause fire.

- Palm Springs, CA, USA

When driving, the steering wheel locks and I can no longer steer the vehicle, it locks in a way that I cannot move the steering wheel at all, which may cause me to crash if I am at a dead end road and need to turn. I have been trying to contact the manufacturer for resolution but have not received any responses. This was a recall back in 2017 under NHTSA Campaign Number: 17V-595 for 2015-2017 Mercedes Benz cars, with the component of Steering/Electric Power Assist System. I am not sure why my car is not listed in the recall since it does have this issue.

- Philadelphia, PA, USA

Safety features become limited or inoperable during operation of vehicle. Taken to dealership, control module replaced. Does not fix issue. All pre-safe functions become inoperarable under this failure. Multiple online forums report same issue. Mercedes seems aware of problem, but not acknowleding their responsibility to recall or find root of issue. When starting vehicle, or often when driving down the road, cruise control, adaptive steering, lane assist, blind spot detectors, pre-safe braking features will all become inoperable and throw multiple failure readings on dashboard.

- Eatonville, WA, USA