Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
28,433 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.

2004 Mercedes-Benz C230 engine problems

engine problem

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2004 Mercedes-Benz C230 Owner Comments

problem #6

Jul 062010

C230 4-cyl

  • miles


This car is a money pit! I bought 2004 C230 kompressor used in 2007. To date I have spent well over $8500 in repairs and the car is sitting in my driveway with its latest affliction..a completely blown engine. It is a useless piece of junk and I am out the $25,000 I originally paid for it, plus the additional $8500 I have put into it. This is how Mercedes Benz takes care of business? something has drastically changed. My dad has had 2 Mercedes over the last 30 years...they ran perfectly until he sold them. He just bought a brand new S-series (2012) and it has already been in the shop numerous times. The cars are made cheap and everything in the interior is plastic, not wood as it should be. Mercedes, you should be ashamed of how far you have let your standards fall, it is a disgrace.

- Lodi, CA, USA

problem #5

Jul 152009


  • 44,600 miles
The contact owns a 2004 Mercedes Benz C230. The contact stated that the engine oil was leaking onto the O2 sensor. The O2 sensors were placed August 2009 by the dealer; the problem was not corrected. The engine oil began leaking on the sensors again so the vehicle was taken back to the dealer where the contact was informed that the camshaft, wiring harness and O2 sensors needed to be replaced. The contact called the manufacturer who offered no assistance. The vehicle had not been repaired. The failure mileage was approximately 44,600 and the current mileage was approximately 71,000.

- Northport, AL, USA

problem #4

Feb 152010


  • 80,000 miles
This is a 2004 Mercedes C230. Check engine light went on. I went to dealer within 15 miles of warning light coming on. I was told that there was an oil leak and that it had dripped over the wiring harness. It would cost $3,500 to repair. I have never missed a maintenance on this car. They said the this happens because of where the O2 sensor is located. This is a defect and design flow created by mb. They should do a recall to protect the wiring harness

- Frisco, TX, USA

problem #3

Dec 052008


  • 46,000 miles


Mercedes Benz C230 kompressor sport sedan began to leak oil into the cam magnet sensor which lead to the failure of the engine wiring harness, costing hundreds of dollars to replace. Mb has known of this problem in the 111 and 271 series of engine for many years. Costing the consumer huge amounts of money for a problem they have known about. No problems with the car flaking or showing signs of leaking oil until its too late.

- Lexington, KY, USA

problem #2

Aug 252004

C230 4WD 6-cyl

  • Automatic transmission
  • miles
While driving consumer noticed steam coming from underneath the vehicle. Consumer was able to pull over to shoulder, lifted up the hood, and smoke came from the engine. Consumer had the vehicle towed to the dealer for inspection.

- Chicago, IL, USA

problem #1

Aug 122004

C230 4WD 6-cyl

  • Automatic transmission
  • miles
Wile driving, the consumer noticed steam coming from the hood and black smoke coming from the back of the vehicle. The vehicle stalled. The driver tried to restart the vehicle, but was unable to do so. The consumer had the vehicle towed to the dealer for inspection. The mechanic was unable to duplicate the problem. Please fill in additional information.

- Chicago, IL, USA

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