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2008 Mercedes Benz ML320

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2008 Mercedes Benz ML320 do not stand out strongly from the model-year median of 28.

About this comparison →

How this year compares

Owner complaints by model year

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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

Limited mileage data: 16 of 21 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.

  • Exterior Lighting. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Steering. 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.

3 crash reports0 fire reports2 injury reports

What owners actually said

21 reports
125,500 miles · Feb 13, 2015
Steering

WHILE AT FREEWAY SPEEDS THE RIGHT FRONT WHEEL BEARING BEGAN TO GROWL AND CONTINUED TO GET WORSE UNTIL REPLACED AT A DEALER. IT SEEMS IT IS PREMATURE FOR A BEARING TO FAIL, THE VEHICLE HAD BEEN SERVICED AT ABOUT 121000 MILES. *TR

NHTSA ODI #10683289

125,781 miles · Feb 13, 2015
Suspension

RIGHT REAR COIL SPRING BROKEN. REAR OF VEHICLE HAS UNEVEN LEVEL. COULD AFFECT HANDLING. *TR

NHTSA ODI #10683287

100,000 miles · Jan 2, 2015
Vehicle Speed ControlCrash

TL* THE CONTACT OWNS A 2008 MERCEDES BENZ ML320. WHILE THE VEHICLE WAS MOVING THROUGH THE AUTOMATED CAR WASH CONVEYOR AT APPROXIMATELY 1 MPH, THE VEHICLE ACCELERATED INDEPENDENTLY. THE CONTACT LOST CONTROL OF THE VEHICLE AND CRASHED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE…

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TL* THE CONTACT OWNS A 2008 MERCEDES BENZ ML320. WHILE THE VEHICLE WAS MOVING THROUGH THE AUTOMATED CAR WASH CONVEYOR AT APPROXIMATELY 1 MPH, THE VEHICLE ACCELERATED INDEPENDENTLY. THE CONTACT LOST CONTROL OF THE VEHICLE AND CRASHED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THERE WERE NO INJURIES. A POLICE REPORT WAS FILED. THE FAILURE MILEAGE WAS 100,000.

NHTSA ODI #10669655

57,000 miles · Dec 16, 2014
Seat BeltsSteering

AT 57,000 THE RACK AND PINION SEALS WENT OUT ON THE STEERING MAKING THE CAR EXTREMELY DIFFICULT TO STEER. REAR SEAT BELTS HAD NEVER BEEN USED UNTIL 12/1/14 AT WHICH TIME I FOUND THEY WERE NOT USABLE. THEY WERE LOCKED INTO POSITION. THE SERVICE WRITER AT THE MERCEDES DEALERSHIP SAID HE OWNED THE SAME MODEL AND HAD TO REPLACE H…

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AT 57,000 THE RACK AND PINION SEALS WENT OUT ON THE STEERING MAKING THE CAR EXTREMELY DIFFICULT TO STEER. REAR SEAT BELTS HAD NEVER BEEN USED UNTIL 12/1/14 AT WHICH TIME I FOUND THEY WERE NOT USABLE. THEY WERE LOCKED INTO POSITION. THE SERVICE WRITER AT THE MERCEDES DEALERSHIP SAID HE OWNED THE SAME MODEL AND HAD TO REPLACE HIS TWICE. DEALER AND FACTORY BOTH REFUSED TO REPAIR EITHER ITEM. *TR

NHTSA ODI #10664708

50,000 miles · May 21, 2014
Engine

MERCEDES HAS MANUFACTURED A DEFECTIVE ENGINE OIL COOLER SEAL. IT NEEDS TO BE REPLACED ON EVERY DIESEL ENGINE AT A COST OF AROUND 4000$. *TR

NHTSA ODI #10593131

82,700 miles · Dec 27, 2013
Seat Belts

MY WIFE NOTICED THE REAR PASSENGER SIDE SEATBELT WAS NOT WORKING PROPERLY. IT WOULD NOT "CATCH" OR RETRACT AFTER BEING PULLED OUT. TOOK TO DEALER. THEY VERIFIED THE TENSIONER WAS BAD AND HAD TO REPLACE THE TENSIONER & SEAT BELT ASSEMBLY. IT WAS NOT COVERED BY THE ORIGINAL OR EXTENDED WARRANTY. I HAD TO PAY $551. I'VE NEVER HEARD…

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MY WIFE NOTICED THE REAR PASSENGER SIDE SEATBELT WAS NOT WORKING PROPERLY. IT WOULD NOT "CATCH" OR RETRACT AFTER BEING PULLED OUT. TOOK TO DEALER. THEY VERIFIED THE TENSIONER WAS BAD AND HAD TO REPLACE THE TENSIONER & SEAT BELT ASSEMBLY. IT WAS NOT COVERED BY THE ORIGINAL OR EXTENDED WARRANTY. I HAD TO PAY $551. I'VE NEVER HEARD OF THIS HAPPENING ON THIS LOW OF MILES. IT'S A VERY IMPORTANT BASIC SAFETY DEVICE. THEY HAD THE PARTS IN STOCK WHICH MADE ME THINK THIS COULD BE A COMMON PROBLEM. *TR

NHTSA ODI #10557376

Mileage unknown · Jan 7, 2013
Steering

2008 MERCEDES ML320. CONSUMER WRITES IN REGARDS TO STEERING WHEEL ISSUES. *TGW THE CONSUMER STATED BEFORE THE VEHICLE REACHED 50,000 MILES, HE BEGAN TO HEAR AN UNUSUAL SOUND WHEN SHE TURNED THE STEERING WHEEL. THE CONSUMER'S HUSBAND ADDED POWER STEERING FLUID, BUT THE NOISE WOULD SOON RETURN. THE CONSUMER LEARNED OF A RECALL…

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2008 MERCEDES ML320. CONSUMER WRITES IN REGARDS TO STEERING WHEEL ISSUES. *TGW THE CONSUMER STATED BEFORE THE VEHICLE REACHED 50,000 MILES, HE BEGAN TO HEAR AN UNUSUAL SOUND WHEN SHE TURNED THE STEERING WHEEL. THE CONSUMER'S HUSBAND ADDED POWER STEERING FLUID, BUT THE NOISE WOULD SOON RETURN. THE CONSUMER LEARNED OF A RECALL. HOWEVER, HER VIN WAS NOT INCLUDED. ACCORDING TO THE INVOICE, THE LEAK WAS COMING FROM THE POWER STEERING RACK.

NHTSA ODI #10491302

75,000 miles · Nov 30, 2012
Power TrainVehicle Speed Control

TRANSMISSION IS HAVING PROBLEMS ACCELERATING AND SHIFTING GEARS. WOULD "REV" UP THEN NOT SHIFT AND NOT ALLOW MY CAR TO ACCELERATE WHILE I WAS ON THE HIGHWAY, CAUSING CARS TO BACK UP BEHIND ME AND PUTTING ME IN DANGER. AT OTHER TIMES IT WILL NOT ALLOW ME TO EVEN ACCELERATE. HAVE TO CONSISTENTLY RESTART MY CAR IN DANGEROUS PLAC…

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TRANSMISSION IS HAVING PROBLEMS ACCELERATING AND SHIFTING GEARS. WOULD "REV" UP THEN NOT SHIFT AND NOT ALLOW MY CAR TO ACCELERATE WHILE I WAS ON THE HIGHWAY, CAUSING CARS TO BACK UP BEHIND ME AND PUTTING ME IN DANGER. AT OTHER TIMES IT WILL NOT ALLOW ME TO EVEN ACCELERATE. HAVE TO CONSISTENTLY RESTART MY CAR IN DANGEROUS PLACES ON THE ROAD TO GET IT TO EVENTUALLY WORK. WENT BY BODY SHOP AND TURNS OUT TO BE A SPEED SENSOR CODE ISSUE WITH THE TRANSMISSION. NEEDS SOME FORM OF A VALVE BODY REPAIR, BUT UNSURE TO WHAT EXTENT. THIS IS ONE OF MANY PROBLEMS WITH THIS VEHICLE. *TR

NHTSA ODI #10486587

55,000 miles · Apr 13, 2012
Engine And Engine CoolingExterior Lighting

BOTH REAR BRAKE LIGHT ASSEMBLIES HAVE FAILED. THESE FAILURES INCREASE THE LIKELIHOOD OF A REAR END COLLISION. WHEN THE LEFT ASSEMBLY FAILED IN 2011, I ATTRIBUTED IT TO BAD LUCK. WHEN THE RIGHT ASSEMBLY FAILED AT 66000 MILES IN 2012, IT OCCURRED TO ME THAT MERCEDES MAY HAVE A PROBLEM THAT DESERVES A RECALL ACTION. INSTEAD OF …

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BOTH REAR BRAKE LIGHT ASSEMBLIES HAVE FAILED. THESE FAILURES INCREASE THE LIKELIHOOD OF A REAR END COLLISION. WHEN THE LEFT ASSEMBLY FAILED IN 2011, I ATTRIBUTED IT TO BAD LUCK. WHEN THE RIGHT ASSEMBLY FAILED AT 66000 MILES IN 2012, IT OCCURRED TO ME THAT MERCEDES MAY HAVE A PROBLEM THAT DESERVES A RECALL ACTION. INSTEAD OF COSTING ABOUT $5 TO $10 FOR LIGHT BULBS THESE ASSEMBLIES COST ABOUT $300 EACH TO REPLACE AND INSTALL. $600 IS ENOUGH TO CAUSE SOME PEOPLE TO NOT REPAIR THEM AND THUS CREATE A SAFETY HAZARD. AT 65000 MILES I ALSO ENCOUNTERED SOME VERY EXPENSIVE TO REPAIR OIL LEAKS THAT MAKE MESSES ON MY DRIVEWAY AND CAUSE WATER POLLUTION WHEN THE OIL RUNS OFF. HAVE YOU HAD ANY REPORTS OF REAR SEAL LEAKS, OIL PAN LEAKS OR OIL COOLER LEAKS ON THIS VEHICLE?

NHTSA ODI #10455203

70,658 miles · Jun 13, 2010
Air Bags

BOTH SUPPLEMENTAL RESTRAINT SYSTEM (SRS), OR AIRBAG SYSTEMS MALFUNCTIONED WITH 15 MINUTES OF EACH OTHER DURING AN ORDINARY DRIVE TO MY BUSINESS LOCATION DURING A BUSINESS TRIP WITH MY MANAGEMENT. THE HEADREST ON THE PASSENGER SIDE DEPLOYED TO THE "CRASH" CONFIGURATION, THE CABIN FILLED WITH ACRID, BURNT ELECTRONICS SMELL AND TH…

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BOTH SUPPLEMENTAL RESTRAINT SYSTEM (SRS), OR AIRBAG SYSTEMS MALFUNCTIONED WITH 15 MINUTES OF EACH OTHER DURING AN ORDINARY DRIVE TO MY BUSINESS LOCATION DURING A BUSINESS TRIP WITH MY MANAGEMENT. THE HEADREST ON THE PASSENGER SIDE DEPLOYED TO THE "CRASH" CONFIGURATION, THE CABIN FILLED WITH ACRID, BURNT ELECTRONICS SMELL AND THE RED SRS DASH LIGHT LIT. TEN MINUTES LATER, THE CABIN ONCE-AGAIN WAS FILLED WITH THE ACRID BURNT ELECTRONICS SMELL AND A SMALL AMOUNT OF SMOKE. THE SECOND TIME THE DRIVER SIDE MALFUNCTIONED. THERE WAS NO AIRBAG DEPLOYMENT AND NO CRASH. *TR

NHTSA ODI #10336023

Official recalls

2

24V298000 · Service Brakes, Hydraulic:power Assist:vacuum

Apr 26, 2024

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML, GL, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.

Consequence & remedy

Consequence: Reduced brake performance or brake failure can increase the risk of a crash.

Remedy: Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed on May 24, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MMUSA's number for this recall is 2024050001/2. This recall is an expansion of previous recall number 22V-315.

22V315000 · Service Brakes, Hydraulic:power Assist:vacuum

May 9, 2022

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML-Class, GL-Class, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.

Consequence & remedy

Consequence: Reduced brake performance or brake failure can increase the risk of a crash.

Remedy: Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed June 30, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2022050014, 2022050015 2022090006, & 2022090007.

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.