really awful
Crashes / Fires:
2 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
259,657 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2001 Mercedes-Benz C320 engine problems

engine problem

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2001 Mercedes-Benz C320 Owner Comments

problem #6

Sep 192015


  • 108,000 miles


I bought a 2001 Mercedes Benz C320 vehicle used on 9/19. After taking it home, I noticed while driving the vehicle accelerates on its own without my foot on the petal. I double checked to make sure the cruise control function was off and the vehicle continued to accelerate on its own at a high speed, up to 55mph.when I drive, I am constantly hitting the brakes to keep from colliding with other vehicles. When I put the car in park, the rpms reach 30,000 and the engine sounds like it's accelerating. This is a safety issue. There are many error codes on this car, so how was the car dealership able to sell this car legally? I need to return this vehicle asap. Please help.

- Sacramento, CA, USA

problem #5

Jul 182012

C320 6-cyl

  • 136,000 miles
While driving on a level and straight road the car automatically applied brakes and came to a complete halt. Weather conditions where; clear visibility, about 85 deg F, dry asphalt surface. Error codes resulting from this fault indicates a faulty esp yaw rate sensor. The independent mechanic code reader showed that the yaw rate sensor output was reading angle rates from as low as 34 to as high as 300+ gradients/sec, while the car was not moving and parked at the shop. As the person responsible for any actions while driving this car, I that the car should not overrule the driver's inputs and create an unsafe condition. The vehicle should just indicate to the driver the existence of an unsafe condition and do not take any action until the driver acknowledges this warning/caution.

- Princeton Junction, NJ, USA

problem #4

Dec 072011

C320 4-cyl

  • miles
Accelerator pedal went full throttle at stop light, tested and had a faulty electronic accelerator pedal dealer and Mercedes Benz refused any warranty repair and were not interested in seeing the faulty part. I have kept the faulty part pending further investigation. I am upset that Toyota must fix a dangerous situation but Mercedes gets away with it, as I know a friend with a 2000 S430 that had the exact same fault.

- Tucson , AZ, USA

problem #3

Jul 072010


  • 1,284,000 miles


2001 Mercedes C240. My wife was driving under normal conditions and the accelerator failed. The engine would go full throttle when in gear. She had to call a tow truck to have it towed to mechanic. He found the car computer had said the electronic accelerator was bad. A new accelerator was put in and no more problem.

- Cutler Bay, FL, USA

problem #2

Dec 082004

C320 6-cyl

  • Automatic transmission
  • 29,943 miles
Consumer was pulling inside of a parking space to park and vehicle suddenly accelerated uncontrollably. Consumer applied the brakes and pedal went to the floor. Then, vehicle continued to accelerate with speed, jumped the curb, and crashed into a parked vehicle head on. Upon impact, both frontal air bags did not deploy. No injuries reported. Consumer was able to drive the vehicle to the dealer for inspection, but mechanic could not duplicate the problem.

- Pennsauken, NJ, USA

problem #1

Apr 092001


  • miles
When the driver depressed the accelerator pedal in heavy traffic the vehicle slowed down, consumer has brought the vehicle in for service on several occasions for problems with acceleration and noise without remedy. Nlm

- Olney, MD, USA

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