IllustrationHAD TWO (2) FUEL PUMP FAILURES IN LESS THAN 3 YEARS. SUV STOPS RUNNING, GOT OFF ROAD SAFELY.*AK
1998 Mercedes Benz ML320
Owner reports · Recalls · Investigations
More warning signs than most ML320 years
Owner complaints for the 1998 Mercedes Benz ML320 are substantially higher than the model-year median of 28.
About this comparison →How this year compares
Owner complaints by model year
Compare all ML320 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
20–25K
625–50K
1150–75K
1275–100K
8100–150K
4150K+
43 reports with mileage · 90 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine And Engine Cooling. Review the 31 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 21 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Visibility. Review the 17 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
9 crash reports5 fire reports10 injury reports
Fuel System, Gasoline complaints
15 reportsAPPARENTLY, THE FUEL INJECTION SYSTEM ON THE 1998 ML320 FAILS QUITE OFTEN....EVEN ON TRUCKS WITH LOW MILEAGE. *AK *JB ***** DIMSII IVOQ ENTRY POSTED AFTER 12/12/02 CUT-OVER TO ARTEMIS*****731049.
KEY LOCK PROBLEMS, WOULD NOT START DUE TO KEY PROBLEMS, WOULD NOT START BECAUSE OF FUEL PUMP FAILURES, WOULD NOT START DUE TO GAS TANK PROBLEMS, DOOR LOCK ASSEMBLIES MOVE UP AND DOWN BY THEMSELVES, LATCH ON HATCH DOOR RATTLED, REAR SEAT BELTS RATTLE, OIL OUT LIGHT CAME ON AT RANDOM TIMES, ENGINE CHECK LIGHT ON, LAST THE FLY-BY …
Read full complaint
KEY LOCK PROBLEMS, WOULD NOT START DUE TO KEY PROBLEMS, WOULD NOT START BECAUSE OF FUEL PUMP FAILURES, WOULD NOT START DUE TO GAS TANK PROBLEMS, DOOR LOCK ASSEMBLIES MOVE UP AND DOWN BY THEMSELVES, LATCH ON HATCH DOOR RATTLED, REAR SEAT BELTS RATTLE, OIL OUT LIGHT CAME ON AT RANDOM TIMES, ENGINE CHECK LIGHT ON, LAST THE FLY-BY WIRE GAS PEDAL WENT TO THE FLOOR WITH SUDDEN ACCELERATION CAUSING AN ACCIDENT OF THE VEHICLE WITH $14,000 DAMAGE. *AK
FUEL PUMP.
GAS GAUGE FAILED. YH
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1PE03058 · Engine Crankshaft Pulley Failure
Opened Dec 17, 2003 · Closed Apr 22, 2004
Status: closed (inferred from source dates) · Engine And Engine Cooling:engine:gasoline:belts And Associated Pulleys
THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS PRELIMINARY EVALUATION TO INVESTIGATE ALLEGATIONS OF ENGINE CRANKSHAFT PULLEY HARMONIC BALANCER FAILURE THAT COULD RESULT IN LOSS OF POWER-STEERING ASSIST.ODI HAS RECEIVED A TOTAL OF 546 NON-DUPLICATIVE REPORTS THAT ALLEGE ENGINE CRANKSHAFT PULLEY HARMONIC BALANCER FAILURE ON ALL MERCEDES-BENZ VEHICLES USING THE SUBJECT COMPONENT.THE SUBJECT COMPONENT FAILURES ARE PROGRESSIVE IN NATURE AND ONLY A SMALL PERCENTAGE OF THE COMPLAINTS AND WARRANT CLAIMS INVOLVED A FAILURE THAT HAD PROGRESSED FAR ENOUGH TO EFFECT POWER STEERING PERFORMANCE (6 OF 55 ODI COMPLAINTS REFERENCE INCREASED STEERING EFFORT).THERE HAVE BEEN NO CRASHES OR INJURIES RELATED TO THE ALLEGED DEFECT.A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.SEE SUMMARY REPORT ATTACHED FOR FURTHER DETAIL.