really awful
Crashes / Fires:
6 / 0
Injuries / Deaths:
5 / 0
Average Mileage:
18,303 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.

2008 Mercedes-Benz C300 engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2008 Mercedes-Benz C300:

Unsubscribe any time. We don't sell/share your email.

2008 Mercedes-Benz C300 Owner Comments

problem #6

Jan 202016


  • 6,990 miles


I had the car was starting to shift gears oddly and that it would seem like the car would rev hig RPM while my foot was off the gas pedal. I brought the car to a Mercedes dealer and he said the transmission was fine. A few weeks later upon leaving a parking lot I had accelerated to leave the parking lot and the car suddenly sped forward cousing my to hit a pole.I brought the car to a shop and it said accelerator pedal short. I called mercededs usa and they havent done anything

- Ny, NY, USA

problem #5

Feb 012015

C300 6-cyl

  • 54,000 miles
Upon commencing my exit from the parking lot adjacent to my church, I pressed the accelerator and the vehicle bolted forward at full speed crashing through the parking lots fence and into a major avenue (where, fortunately no traffic was transiting at the moment). The vehicle failed to respond to my initial attempts to apply the brakes and it was not until the vehicle had traversed the four lane avenue and reached the sidewalk on the other side of the avenue that I was able to bring the vehicle under control and judiciously park same until a police accident report could be filed ([xxx]) and the vehicle towed away. Vehicle is now in a repair shop and estimated costs are approximately $10,000. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- San Juan, PR, USA

problem #4

Jun 302011


  • 16,500 miles
The contact owns a 2008 Mercedes Benz C300. The contact stated that while parking the vehicle in a residential garage, the vehicle suddenly accelerated and crashed into the wall. The vehicle then reversed independently and crashed into a concrete wall. A police report was filed and no injuries were reported. The vehicle was destroyed. The manufacturer was not made aware of the failure. The failure and current mileage was 16,500.

- Diamond Bar, CA, USA

problem #3

Nov 022010


  • 15,000 miles


I was edging out of a parking space in a supermarket parking lot. I stepped on the brake pedal to allow another car to pass. My car suddenly surged ahead, hitting five other vehicles and a pedestrian, before smashing into a barrier that stopped it. I was pushing hard on the brake petal throughout, but it had no effect on stopping the car. It is of course possible that I stepped on the gas pedal and not the brake pedal. Examining the identical model of the car subsequent to the accident, I found that, because of the closeness of the gas pedal to the brake pedal, it is entirely possible for a driver to have his right foot partially on the brake pedal and partially on the accelerator. It appears that the two petals are too close to each other and should be spaced further apart, to eliminate this possible safety hazard.

- Olney, MD, USA

problem #2

Nov 012009

C300 6-cyl

  • 17,330 miles
Two separate instances of commanded acceleration with 2008 Mercedes C300. Purchased the car from a private used car dealer in September 2009 with 10,500 miles. On November 1, 2009 I experienced first instance of uncommanded acceleration while slowing to a stop in a driveway. Engine suddenly accelerated to a high rate and struck a parked truck immediately in front of car. Shifted into reverse and car sped at maximum RPM across lawns and street until finally returning to normal. At no time were the brakes able to have any effect on slowing my speed. This incident was not reported to police since no serious property damage occurred. However, I immediately contacted dealer from whom we purchased the car. They claimed we needed to contact Mercedes since car was still under warranty. When I visited the local Mercedes dealer the following day, they initially expressed interest in inspecting the car right away however nearly 2 weeks passed before they told us to bring the car in for inspection. They kept the car for 3 days and told us they found no mechanical or electrical faults. We were greatly disappointed with their findings and sent a certified letter to Mercedes usa with full details of the incident. Their reaction was that the vehicle was operating as designed. We continued to operate the vehicle and on May 21, 2010 a second instance of sudden uncommanded rapid acceleration occurred. I was pulling out of my driveway at a slow rate while slowing to a stop as another vehicle passed by. Suddenly, the Mercedes accelerated uncontrollably and struck the passing vehicle causing it to overturn. The circumstances were nearly identical and I am positive the gas pedal was not being depressed. Car has bluetooth capability and I have a bluetooth compatible cell phone. Perhaps this caused interference with something in the engine computer system. My car is presently in an undriveable condition and Mercedes has not yet come to inspect it. Updated 07/08/11 updated IVOQ 07/20/11 updated 07/29/11

- Paramus, NJ, USA

problem #1

Mar 312009

C300 6-cyl

  • miles
Serious defect of sudden acceleration in Mercedes model C300 year 2008. The consumer stated as he was about to park the vehicle, he released the brake pedal and suddenly the vehicle accelerated, went over a concrete barrier and hit the wall of the building finally coming to rest. The consumer stated the vehicle was a rental.

- Woodside, CA, USA

Not what you are looking for?