2009 Mercedes-Benz C300 engine problems

Tl* the contact owns a 2009 mercedes-benz c300. While stopped at a red light, the engine revved and the vehicle accelerated. The brake pedal was depressed, but failed and the contact crashed into the rear of another vehicle. The air bags failed to deploy. A police report was filed and there were no injuries the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 54,000. Updated 02/21/17 updated 9/5/18

Without any warning, my car will not start. Thought it was the battery, but no luck. The key open the door, the lights inside of the care come on, and the screen still pops up on the dashboard. The steering wheel is locked and you can not change the gear. I had to get my car towed to the dealership. Car has almost 70 k miles on it. Very dissapointed to read the other complaints and the projected cost to fix. About a year and a half ago I also paid out of pocket for the rear light panel due to it not working.