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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 →

When problems were reported

Mileage at the reported incident

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

What owners actually said

133 reports
150,843 miles · Nov 9, 2008
Exterior Lighting

HEADLAMPS TURN OFF WHILE DRIVING. IT OCCURS ON A NIGHTLY BASIS. OTHER CARS CANNOT SEE ME. ALMOST HIT SOMEONE CROSSING THE STREET BEFORE I NOTICED THE LIGHTS WERE OFF. SOMETIMES CYCLING THE LIGHTS ON AN OFF TEMPORARILY FIXES THE PROBLEM. OTHER TIMES I DRIVE WITH MY FOGLAMPS ON. I'VE CHECKED THE FUSE AND WILL BE TAKING THE CA…

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HEADLAMPS TURN OFF WHILE DRIVING. IT OCCURS ON A NIGHTLY BASIS. OTHER CARS CANNOT SEE ME. ALMOST HIT SOMEONE CROSSING THE STREET BEFORE I NOTICED THE LIGHTS WERE OFF. SOMETIMES CYCLING THE LIGHTS ON AN OFF TEMPORARILY FIXES THE PROBLEM. OTHER TIMES I DRIVE WITH MY FOGLAMPS ON. I'VE CHECKED THE FUSE AND WILL BE TAKING THE CAR INTO THE DEALER NEXT WEEK. PREVIOUSLY, IN 2006 THE HEADLAMPS WOULDN'T TURN OFF. THE DEALER FIXED THIS PROBLEM. *TR

NHTSA ODI #10248088

125,000 miles · Jul 29, 2008
Electrical System

ON MY MERCEDES ML320, 1998 THE KEY REFUSE TO START THE ENGINE. I WAS TOLD AT PLAZA MOTORS IN ST,. LOUIS MO. THAT THE CAR DID NOT RECOGNIZE THE KEY ANY MORE. UPON MY RESEARCH I FOUND THAT IT IS COMMON PROBLEM WITH THE ML320 SERIES WHICH IS AN ENGINEERING PROBLEM ON THE PART OF THE MANUFACTURER ESPECIALLY THE EARLIER ONCE 1998-20…

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ON MY MERCEDES ML320, 1998 THE KEY REFUSE TO START THE ENGINE. I WAS TOLD AT PLAZA MOTORS IN ST,. LOUIS MO. THAT THE CAR DID NOT RECOGNIZE THE KEY ANY MORE. UPON MY RESEARCH I FOUND THAT IT IS COMMON PROBLEM WITH THE ML320 SERIES WHICH IS AN ENGINEERING PROBLEM ON THE PART OF THE MANUFACTURER ESPECIALLY THE EARLIER ONCE 1998-2000 AND IT WILL CAUSE $6700.00 TO FIX. I WILL APPRECIATE AN INVESTIGATION, IT'S SO COMMON THAT A LOT OF PEOPLE ARE SELLING THEIR CARS BECAUSE OF THIS. *TR

NHTSA ODI #10236339

59,945 miles · May 7, 2008
Power Train

FAILURE OF TRANSFER CASE FIRST DETECTED. *TR

NHTSA ODI #10226974

20,162 miles · May 7, 2008
Fuel System, Gasoline

REPLACEMENT OF 10 FULL SENDER AND FUEL GAUGE RELATED EQUIPMENT PARTS ON 1998 MB ML320, REPLACEMENT OF TRANSFER CASE. *TR

NHTSA ODI #10226973

142,900 miles · Apr 29, 2008
Seat BeltsFireInjury

FAILURE OF FRONT DRIVER'S SEATBELT ASSEMBLY; A GUNSHOT TYPE NOISE AND SMOKE OCCURRED COMING OUT OF THE SEATBELT RETRACTOR AREA; SEATBELT RETRACTOR BROKE CAUSING THE SEATBELT TO KEEP RETRACTING TIGHTENING ON PERSON AND THE RELEASE ON THE SEATBELT WOULD NOT RELEASE CAUSING INJURY; THE EVENT OCCURRED WITHIN ONE MINUTE OF TURNING ON…

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FAILURE OF FRONT DRIVER'S SEATBELT ASSEMBLY; A GUNSHOT TYPE NOISE AND SMOKE OCCURRED COMING OUT OF THE SEATBELT RETRACTOR AREA; SEATBELT RETRACTOR BROKE CAUSING THE SEATBELT TO KEEP RETRACTING TIGHTENING ON PERSON AND THE RELEASE ON THE SEATBELT WOULD NOT RELEASE CAUSING INJURY; THE EVENT OCCURRED WITHIN ONE MINUTE OF TURNING ON CAR IN PARKED POSITION AND AS SOON AS SEATBELT WAS PUT IN THE BUCKLE. *TR

NHTSA ODI #10226038

97,433 miles · Sep 20, 2007
Air BagsSeat BeltsInjury

I PUT MY SEAT BELT (S/B) ON AND STARTED THE IGNITION. A LOUD BANG, I WAS JERKED BACK INTO MY SEAT BY THE S/B AND WAS TRAPPED. WHITE SMOKE ESCAPED WHERE THE S/B COMES OUT OF THE FRAME. THE SRS LIGHT WAS ILLUMINATED. I TURNED THE CAR OFF, UNBUCKLED THE S/B, WHICH DIDN'T RETRACT BACK INTO THE FEED, GOT OUT OF THE CAR AND WAITED F…

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I PUT MY SEAT BELT (S/B) ON AND STARTED THE IGNITION. A LOUD BANG, I WAS JERKED BACK INTO MY SEAT BY THE S/B AND WAS TRAPPED. WHITE SMOKE ESCAPED WHERE THE S/B COMES OUT OF THE FRAME. THE SRS LIGHT WAS ILLUMINATED. I TURNED THE CAR OFF, UNBUCKLED THE S/B, WHICH DIDN'T RETRACT BACK INTO THE FEED, GOT OUT OF THE CAR AND WAITED FOR THE SMOKE TO DISSIPATE. I GOT BACK INTO THE CAR, PUT MY S/B ON, WHICH WAS STUCK AND WOULD NOT ADJUST. I CALLED MB DEALERSHIP TO REPORT INCID AND MAKE APT FOR CAR TO BE CHKD. 8-30-07 I BROUGHT CAR INTO MB OF RENO, NV. MB SAID NEED TO ORDER PARTS, BRING BACK ONCE PARTS IN. THE OTHER SERVICE ADVISOR SAID THAT THE SAME THING HAPPENED TO ANOTHER CUST RECENTLY, BUT NEVER HEARD OF ANOTHER OCCURRENCE. I ASKED MY SERVICE ADVISOR, JOSEPH CASTLEBERRY, TO INVEST PROBLEM, LET ME KNOW. HE WOULD GET BACK TO ME. I PICKED UP THE CAR AFTER REPAIRS, JOE DIDN'T KNOW WHY MALFUNCTION OCCURRED, BUT COST WAS $1079.82. I TOLD HIM THIS IS A SAFETY ISSUE AND I WANTED THIS INVESTIGATED. HE SAID IT WAS A FLUKE INCIDENT, AND I STRESSED, I WANTED ANSWERS. MB OF RENO INV COPY READS AS ?INSPECT FOR COMPLAINT, FOUND THE DRIVERS ETR HAS GONE OFF WITHOUT CAUSE. PREPARE AND PERFORM DTC QUICK TEST, FOUND ONLY CODE FOR DRIVERS ETR, CHECK MB HIST OF COMPLAINT, AS PER HIST REC THEY REPLACED BOTH THE SRS CONTROL MODULES AND THE ETR, RECOMMEND THAT BOTH THE SRS CONTROL UNIT AND THE ETR BE REPLACED AS PER TAC HISTORY OF COMPLAINT, R&R LEFT SIDE B PILLAR PANELING, REPLACED DRIVERS S/B, R&R SENSOR CONSOLE, REPLACED SRS CONTROL UNIT, CHECK ELECTRICAL WIRES FOR SHORTS, WIRING IS OK AND INTACT, PERFORMED VERSION CODING OF SRS CONTROL UNIT, CLEARED ALL CODES AND RETEST, RETEST OK?. ON 9-17-07 BEN FROM MB OF NA SAID THEY COULDN'T DO ANYTHING TO INVESTIGATE THE ISSUE BECAUSE THE CAR WAS REPAIRED, AN INVESTIGATION SHOULD HAVE BEEN DONE BEFORE THE CAR WAS REPAIRED. COPY OF THE INVOICE AVAIL UPON REQ. VEH: 98 MER ML320 MIL:97508 *TR

NHTSA ODI #10203560

148,000 miles · Jul 18, 2007
Engine And Engine Cooling

HARMONIC BALANCER BROKE APART AT 140K , NO INDICATION OF FAILURE, JUST LOTS OF SMOKE AND NO STEERING CAPABILITIES, WAS IN THE MIDDLE OF THE INTERSECTION. POLICE PUSHED ME TO SAFETY. PLASTIC SHATTERED EVERYWHERE IN ENGINE COMPARTMENT.. THE DEFECT WAS THE PLASTIC PULLY, INTERNET RESEARCH SHOWED OTHER PEOPLE HAD SAME PROBLEM A…

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HARMONIC BALANCER BROKE APART AT 140K , NO INDICATION OF FAILURE, JUST LOTS OF SMOKE AND NO STEERING CAPABILITIES, WAS IN THE MIDDLE OF THE INTERSECTION. POLICE PUSHED ME TO SAFETY. PLASTIC SHATTERED EVERYWHERE IN ENGINE COMPARTMENT.. THE DEFECT WAS THE PLASTIC PULLY, INTERNET RESEARCH SHOWED OTHER PEOPLE HAD SAME PROBLEM AND COST THEM THOUSANDS. *TR

NHTSA ODI #10196654

Mileage unknown · Jan 5, 2007
Engine And Engine Cooling

1998, MERCEDES ML320, 70,000 MILES, BOTH CATALYTIC CONVERTERS NEED TO BE REPLACED. THERE IS A MAJOR CAMPAIGN FOR RECALL ON THIS PART FOR MERCEDES TO REPLACE AT NO COST TO THE OWNER, HOWEVER, THE YEAR OF THE CAR IS IN QUESTION. THIS INCIDENT HAPPENED 4 MONTHS AFTER THE 8 YEAR WARRANTY RAN OUT.

NHTSA ODI #10177846

Mileage unknown · May 6, 2006
Electrical SystemInterior Lighting

INSTRUMENT LIGHTS DO NOT LIGHT UP. INSTRUMENTS CANNOT BE SEEN AT NIGHT INCLUDING SPEEDOMETER AND GAS GAGE. POTENTIAL CONSEQUENCES ARE RUNNING OUT OF FUEL OR EXCEEDING THE SAFE SPEED LIMITS BECAUSE SPEEDOMETER IS NOT VISIBLE. THE PROBLEM HAS GOTTEN WORST WITH TIME. THIS HAS BEEN A PROBLEM SINCE THE CAR WAS NEW AND DEALERS BLAME …

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INSTRUMENT LIGHTS DO NOT LIGHT UP. INSTRUMENTS CANNOT BE SEEN AT NIGHT INCLUDING SPEEDOMETER AND GAS GAGE. POTENTIAL CONSEQUENCES ARE RUNNING OUT OF FUEL OR EXCEEDING THE SAFE SPEED LIMITS BECAUSE SPEEDOMETER IS NOT VISIBLE. THE PROBLEM HAS GOTTEN WORST WITH TIME. THIS HAS BEEN A PROBLEM SINCE THE CAR WAS NEW AND DEALERS BLAME THE PROBLEM ON LIGHT BULB PROBLEMS. SOMETIME RAPPING THE INSTRUMENT CLUSTER CAUSE THE LIGHTS TO COME BACK ON INDICATING THAT THIS IS A PROBLEM WITH THE CONNECTION AND NOT THE BULBS. THIS APPEARS TO BE A DEFECT WITH THE BULB CONNECTIONS AS THE PROBLEM IS RECURRING AND THE DEALERS ARE NOT TRULY FIXING THE SOURCE OF THE PROBLEM. *JB

NHTSA ODI #10156906

139,000 miles · Feb 22, 2006
Engine And Engine Cooling

WHILE DRIVING IN TRAFFIC, THE VEHICLE SEEMS TO BE LEAKING EXHAUST DIRECTLY INTO THE PASSENGER COMPARTMENT CAUSING ME TO HAVE SEVERE HEADACHES AND FEEL VERY TIRED. IT HELPS SOMEWHAT WITH THE ODOR WHEN THE HVAC IS SWITCHED TO RECIRCULATE, BUT I FEEL THAT CO IS STILL SEEPING IN THE VEHICLE. *NM

NHTSA ODI #10150915

Official recalls

0

No 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

1

PE03058 · 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.