really awful
Crashes / Fires:
1 / 1
Injuries / Deaths:
3 / 0
Average Mileage:
86,435 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 ML320 fuel system problems

fuel system problem

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2001 Mercedes-Benz ML320 Owner Comments

problem #4

Apr 302012


  • 182,741 miles


My ML320 vehicle was driven for approximately five hours round trip then parked for the evening. I attempted to start the vehicle the following morning and the vehicle would not start. After doing an exhaustive diagnostic on the vehicle. I removed the fuel pump from inside the fuel tank. I saw that the wiring harness/connector for the hot lead was black and brown in color and the plastic around the harness had melted. I took pictures and stored the pump. I emailed Mercedes and asked them to get back with me since my wife and children had been in the vehicle and this is the family vehicle. I also read several forums and complaints on the internet reference Mercedes fuel pumps including my specific model. I read how they have caught on fire. I also saw a picture of a fuel pump out of a ml 320 in 2006 that had caught fire and almost looked identical to my fuel pump I had removed. I have looked for recalls and still have not heard back from Mercedes. I am at a loss on what to do or if there is anything I can do. I was told that Mercedes knows about this problem but that hey are unlikely to do anything because of the cost. I want to report this in case something does happen to me and my family. It will be on record. Thank you for your time.

- West Richland, WA, USA

problem #3

Aug 282010


  • 50,000 miles
The contact owns a 2001 Mercedes Benz ML320. While driving various speeds, the fuel gauge would read empty when fuel tank was full. The vehicle was not taken to the dealer for diagnostics or repairs. The VIN was not available. The approximate failure mileage was 50,000... updated 10/14/11 the consumer stated the gas gauge doesn't not work. Updated 10/28/11

- Olympia, WA, USA

problem #2

Oct 202009


  • 92,000 miles
The contact owns a 2001 Mercedes ML320. The contact was driving with the cruise control set at 65 mph. When she attempted to disengaged the cruise control bt tapping the brakes, the vehicle would not decelerate. In order to stop the vehicle, she had to turn the vehicle completely off and as a result, the vehicle ran off the road. The dealer was contacted who advised her to bring in the vehicle for a diagnostic test. The manufacturer was made aware of the failure but did not offer any assistance. The vehicle was not repaired. The failure mileage was 92,000 and the current mileage was 93,000.

- Moreno Valley , CA, USA

problem #1

Jun 122003

ML320 6-cyl

  • Automatic transmission
  • 21,000 miles
We believe that one or more mechanical and/or design failures contributed to an accident in which our 2001 Mercedes Benz ml 320 was involved.

- Menlo Park, CA, USA

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