IllustrationFAILURE OF TRANSFER CASE FIRST DETECTED. *TR
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
Power Train complaints
10 reportsWHILE APPLYING THE ACCELERATOR PEDAL HEARD A LOUD POPPING NOISE COMING FROM THE FRONT. VEHICLE VIBRATED UNCONTROLLABLY. HOWEVER, CONSUMER WAS ABLE TO MAINTAIN CONTROL OF THE VEHICLE, AND DROVE IT TO THE DEALER FOR INSPECTION. MECHANIC DETERMINED THAT THE TRANSFER CASE NEEDED TO BE REPLACED. *AK
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 …
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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. TRANSFER CASE MOTOR FIXED BY DEALER WITHOUT CONSULTING. AFTER REPAIR, TRANSFER CASE MOTOR FAILED. DEALER STATES OWNER RESPONSIBLE FOR COSTS. HAS HAD REPAIR OF HARMONIC BALANCER ON FRONT OF ENGINE DUE TO EXCESSIVE HEAT BUILDUP LEADING TO OIL LEAK AND FAILURE OF BELT TENSIONER. WINDOW SWITCHES HAVE FAILED TWICE AND FIXED AT EXPENSE OF OWNER. SIX DIFFERENT KEYS HAVE FAILED @ THE COST OF $220/KEY. REAR WINDOW DEFROSTER CAUSES LOSS OF STEREO RECEPTION. REAR WINDOW WIPER MOTOR HAS FAILED. FRONT END MAKES NOISE.*AK
TRANSFER CASE FAILURE. FRONT DRIVE AND PASSENGER SIDE WHEELS MAKES NOISE WHEN MAKING A TURN FROM STOP POSITION OR SLOW SPEED. DID SOME RESEARCH AND IT TURNS OUT THAT THIS IS A REGULAR OCCURANCY FOR THE 1998-1999 ML320. *AK
DRIVESHAFT BROKE. ASSOCIATED CABLE BROKE ACTIVATING SIDE AIRBAG SENSOR. MINOR CONTUSIONS.*AK
DRIVESHAFT BEARING BROKE WHILE DRIVING. PLEASE PROVIDE FURTHER INFORMATION.*AK
THE REAR LOWER CONTROL ARM FAILED AND TOOK TWO WEEKS TO HAVE REPAIRED. NLM
TRANSMISSION WOULD NOT SHIFT FROM LOW. ONLY HAPPENS IF VEHICLE IS PLACED IN GEAR & HAS NOT STOP. TRANSMISSION WOULD LOCK INTO 1ST GEAR OR 2ND GEAR. PROBLEM NOT FIXED IF VEHICLE IS SHUT DOWN. *AK
POWER TRANSMISSION FAILED. YH
THE CONSUMER HAS BEEN EXPERIENCING PROBLEMS WITH AUTOMATIC TRANSMISSION/MOTOR/ POWER WINDOWS/ DOOR HANDLES AND PANELS, AND SUSPENSION SYSTEM. CONSUMER HAS BEEN EXPERIENCING THESE PROBLEMS EVER SINCE VEHICLE WAS PURCHASED. THE MANUFACTURER HAS BEEN CONTACTED. *AK
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.