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2003 Mercedes Benz ML500

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

About this comparison →
13Owner complaints

Model-year median: 13

0Recall campaigns

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0Investigations

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How this year compares

Owner complaints by model year

Other model years Selected year
27
200213
200318
20043
200537
2006
Compare all ML500 years →

Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

Engine
5Electrical System
3Seats
3Steering
3Service Brakes
2
All reported categories
Fuel System, Gasoline
1Service Brakes, Hydraulic
1Tires
1

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 8 of 13 reports include usable mileage. There isn’t enough coverage to show a useful chart.

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. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Seats. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports2 fire reports1 injury reports

Engine complaints

5 reports
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Mileage unknown · Feb 14, 2018
Engine

ENGINE KEEPS GETTING OVER-HEATED EVEN AFTER A NEW ENGINE FAN HAS BEEN REPLACED. HOWEVER, AFTER ITS REPLACEMENT I TOOK IT TO TWO MERCEDES DEALERSHIP TO RE-INSPECT AND MAKE ADJUSTMENT TO THEIR INSTALLMENT OF THE FAN BUT IT KEEPS GETTING OVERHEATED. I ALSO HAD A NEW WATER COOLANT TANK INSTALLED BUT IT IS ALSO LEAKING OUT THE COOLAN…

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ENGINE KEEPS GETTING OVER-HEATED EVEN AFTER A NEW ENGINE FAN HAS BEEN REPLACED. HOWEVER, AFTER ITS REPLACEMENT I TOOK IT TO TWO MERCEDES DEALERSHIP TO RE-INSPECT AND MAKE ADJUSTMENT TO THEIR INSTALLMENT OF THE FAN BUT IT KEEPS GETTING OVERHEATED. I ALSO HAD A NEW WATER COOLANT TANK INSTALLED BUT IT IS ALSO LEAKING OUT THE COOLANT AND SHOWING THE WARNING LIGHT. THESE EVENTS HAPPEN AFTER I TOP UP THE COOLANT TANK AND DRIVE AROUND 50 MILES, THEN THE OVERHEATING STARTS AND THE TANK STARTS BECOMING EMPTY.

NHTSA ODI #11072930

169,650 miles · Mar 12, 2017
EngineSteering

LOSS OF POWER STEERING DRIVING ON THE FREEWAY DUE TO SUDDEN BREAK OF IDLER ARM PULLEY AND SUBSEQUENT SHREDDING OF BELT. PROBLEM IS THE PULLEY IS MADE OF PLASTIC AND CRACKED IN TWO, LEAVING 1/2 THE PULLEY AND SHREDDING THE BELT. THIS OCCURRED AT DRIVING SPEED OF 50 MPH AND MILEAGE AROUND 169,650 ON 2003 ML500. THIS WAS VERY DANGE…

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LOSS OF POWER STEERING DRIVING ON THE FREEWAY DUE TO SUDDEN BREAK OF IDLER ARM PULLEY AND SUBSEQUENT SHREDDING OF BELT. PROBLEM IS THE PULLEY IS MADE OF PLASTIC AND CRACKED IN TWO, LEAVING 1/2 THE PULLEY AND SHREDDING THE BELT. THIS OCCURRED AT DRIVING SPEED OF 50 MPH AND MILEAGE AROUND 169,650 ON 2003 ML500. THIS WAS VERY DANGEROUS. I WAS ABLE TO PULL OFF THE FREEWAY AS I WAS DRIVING IN THE LANE NEAREST FREEWAY EXITS. ALMOST IMPOSSIBLE BUT ABLE TO STEER INTO A PARKING LOT. LUCKY IT WAS 'RUSH' HOUR AND TRAFFIC WAS SLOW ON SURFACE STREETS. INCREDIBLE SAFETY ISSUE DUE TO DIFFICULTY TO STEER WITHOUT POWER STEERING. CAR IS REGULARLY MAINTAINED BY GERMAN MECHANIC FAMILIAR WITH REPAIR OF MB ENGINES IN GERMANY.

NHTSA ODI #10960216

150,000 miles · Jul 22, 2016
Electrical SystemEngineSteering

TAKATA RECALL. POWER STEERING BRAKE ISSUE, POWER STEERING HOSE BECAME DETACHED DURING VEHICLE OPERATION, COULD NOT STEER VEHICLE. TRANSMISSION AND RADIO DRAIN, CAR CUT OFF ON ME DURING DRIVING.

NHTSA ODI #10887829

111,000 miles · Aug 15, 2014
Electrical SystemEngine

DRIVING 45MPH ON HIGHWAY, CAR SHUTS OFF COMPLETELY. TOWED TO CLOSEST GAS STATION, WHO PUT A COMPUTER ON IT TO FIND OUT IT WAS THE CRANK SHAFT SENSOR. AFTER COMPLETELY COOLING IT WILL START AGAIN, BUT IN LESS THAN 10 MIN IT CUTS OFF. *TR

NHTSA ODI #10622600

Mileage unknown · Jun 8, 2012
Engine

NOTES TAKEN ON PHONE BY BOWMAN, ODI, NHTSA: VEHICLE SHUTS OFF AFTER IMPACT WITH IRREGULAR ROAD SURFACES CONDITION SUCH AS POTHOLE, TRANSVERSING A CHANGE ROAD GRADES / SURFACES SUCH AS SPEED BUMPS, ETAL. VEHICLE CAN BE IMMEDIATELY RESTARTED AFTER SHUT-OFF. ONE INCIDENT ALLEGEDLY OCCURRED WHEN ATTEMPTING TO MERGING ONTO INTER…

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NOTES TAKEN ON PHONE BY BOWMAN, ODI, NHTSA: VEHICLE SHUTS OFF AFTER IMPACT WITH IRREGULAR ROAD SURFACES CONDITION SUCH AS POTHOLE, TRANSVERSING A CHANGE ROAD GRADES / SURFACES SUCH AS SPEED BUMPS, ETAL. VEHICLE CAN BE IMMEDIATELY RESTARTED AFTER SHUT-OFF. ONE INCIDENT ALLEGEDLY OCCURRED WHEN ATTEMPTING TO MERGING ONTO INTERSTATE.

NHTSA ODI #10461541

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

0

No exact-year investigations in this snapshot.