1999 Mercedes-Benz ML320 Fuel system Problems
- Complaints
- 14about this part
- Share
- 11%of 125 total for the year
- Median mileage
- 85,612miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 14 complaints about the fuel system of the 1999 Mercedes-Benz ML320, 11% of the 125 complaints for this model year. Where a mileage was given, the median is 85,612 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“1.) brake pads need replacing after 10,000 miles. 2.) fuel filter replacement requires newly designed part and additional hoses, clamps etc totaling over $300. Because previous part causes fuel leaks(?) and not available. Shouldn't mb pay for part of this??”
NHTSA complaint #10010610, filed 2003-03“Vehicle was shutting off and burning a lot of gas. Consumer was going on a trip, and dealer checked vehicle the day before the road trip. Consumer was 100 miles away, and vehicle cut off. Vehicle was towed to nearest dealer. Cause still cannot be found.”
NHTSA complaint #888502, filed 2001-05“Vehicle has a faulty fuel pump. The consumer received a recall letter regarding the power steering, however the consumer did not state if the vehicle experienced a failure.”
NHTSA complaint #10048186, filed 2003-11“Based on a dealer reccomendation, I have become aware the mercedes benz has been conducting and unpublicised campaign to advise owners of certian of the ml series suvs of the desireability of upgrading , at the owners expense, the fuel system including filters and lines. This is apparently in response to a number of fuel filter and fuel pump failures, ascribed by mercedes to poor quality u.s. Fuel these failures have the effect of immobilizing the car, without warning. These unexpected stoppages cn have very serious saftey implications if they occur in a moving traffic flow situation. …”
NHTSA complaint #10030378, filed 2003-07Related service bulletins
- 10167553Jul 1, 2013Combination message: "Clean fuel filter" is displayed. The fault code 162500 (water level message - Bosch) or P226997 (water level message - Delphi) or 171600 (filter load…
- 10033607Jan 1, 2010Mercedes benz: check for installation of spacer between brake and fuel line, install if necessary. The spacer between the brake line and fuel line may not have been installed…
- 10032707Sep 10, 2009Mercedes: ensuring unobstructed movement for the fuel level sensor. When installing the left or right fuel level sensor, it is essential for it to have unrestricted, unobstructed…
- 10029105Apr 2, 2009Mercedes benz: fuel loss at pressure regulator valve and/or poor engine running characteristics (shakes, knocks, surges, changes to lip home mode, poor output, poor fuel economy…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2009 | 9 | 32% |
| 2007 | 2 | 13% |
| 2005 | 1 | 20% |
| 2003 | 2 | 9% |
| 2002 | 2 | 2% |
| 2001 | 11 | 8% |
| 2000 | 16 | 10% |
| 1999 | 14 | 11% |
| 1998 | 20 | 15% |
Other parts of the 1999 Mercedes-Benz ML320
35 complaintsSteering
29 complaintsTransmission and drivetrain
19 complaintsBrakes
11 complaintsVehicle speed control
7 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsAir bags
5 complaintsOther or unknown
5 complaintsSuspension
5 complaintsBody and structure
4 complaintsElectrical system
3 complaintsElectronic stability control
3 complaints
← All problems reported for the 1999 Mercedes-Benz ML320
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology