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Fuel systemPart report

1998 Mercedes-Benz ML320 Fuel system Problems

Complaints
20about this part
Share
15%of 133 total for the year
Median mileage
58,158miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 20 complaints about the fuel system of the 1998 Mercedes-Benz ML320, 15% of the 133 complaints for this model year. Where a mileage was given, the median is 58,158 miles. 2 of these say a crash was involved, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“My battery was low and unknown to me the ML320 for this year loses its transponder codes in the das security module when you try to start the vehicle with a low battery. This is evidentally the third key that has lost its programming on my vehicle due to low battery voltage. Cost so far is 499 for a key, weeks waiting for the key from germany, and 300 to program it once they recieve the key. Its a dealership only item so its very very costly. …”

NHTSA complaint #10669353, filed 2014-12, 131,459 miles

“Fuel pump failure after 70,000 miles. Left stranded on the road. Had to call for a tow truck. Hammond tire and auto center in hammond,la contacted benson mercedes in metairie and was told several of these had appeared in recent months in his shop. Benson mercedes sent out the new fuel pump with several modifications made to bring the vehicle up to compliance . I contacted mercedes and was told there was no recall and there would be no reimbursement for half the cost of the parts since I did not have the work done at a certified mercedes dealership. …”

NHTSA complaint #10052533, filed 2004-01, 70,000 miles

“Laundry list of failures. Jack has almost killed me while changing tire. Vehicle fell, almost hitting me but catching side of vehicle before landing on me! Hood latch has failed on a few occasions, causing hood to open while vehicle was in motion. Air mass meter failed. Has required 5 (five!) alignments in two years. When brought to dealer's attention, was told nothing was wrong. A month later requires another alignment. Alignment problems causes wear on tires, which has caused hydroplaning and loss of control of vehicle. Vehicle swerves uncontrollably when hits anything other than flat road. …”

NHTSA complaint #10068171, filed 2004-05, 97,615 miles

“Fuel line coming out of gas tank came loose and sprayed raw fuel all over back of car and onto street. Could have ignited from any spark or open flame.”

NHTSA complaint #10039586, filed 2003-09, 46,316 miles

“Apparently, the fuel injection system on the 1998 ML320 fails quite often....even on trucks with low mileage. ***** dimsii ivoq entry posted after 12/12/02 cut-over to artemis*****731049.”

NHTSA complaint #10006347, filed 2000-09, 33,000 miles

Related service bulletins

Fuel system: other model years

YearComplaintsShare of year
2009932%
2007213%
2005120%
200329%
200222%
2001118%
20001610%
19991411%
19982015%

Other parts of the 1998 Mercedes-Benz ML320

Engine cooling
31 complaints
Electrical system
21 complaints
Visibility (wipers, defrost, mirrors)
17 complaints
Brakes
16 complaints
Body and structure
12 complaints
Transmission and drivetrain
10 complaints
Seat belts
8 complaints
Air bags
7 complaints
Vehicle speed control
7 complaints
Steering
6 complaints
Equipment
5 complaints
Exterior lighting
5 complaints

← All problems reported for the 1998 Mercedes-Benz ML320

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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