RoadVitals

2008 Mercedes-Benz ML320 Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
21
Latest Aug 24, 2024
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
12
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
3

What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2008 Mercedes-Benz ML320, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

  • Exterior lighting518.5%
  • Electrical414.8%
  • Engine414.8%
  • Steering311.1%
  • Driver assistance27.4%
  • Seat belts27.4%
  • Brakes27.4%
  • Visibility13.7%
  • Body & structure13.7%
  • Powertrain (other)13.7%
  • Suspension13.7%
  • Airbags13.7%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Exterior lighting

Reports naming headlights, tail lights, turn signals and other exterior lighting.

5
reports

From owner reports, verbatim

Right rear brake light inoperative even with new bulb. Dash warning light shows this light not working .08

NHTSA ID 11610621 · filed Aug 24, 2024

THE REAR TURN SIGNALS AND BRAKES LIGHTS ARE NOT WORKING PROPERLY, EVEN WITH NEW BULBS AND REPLACEMENT OF THE BULBS BASE CASE THE TURN SIGNAL STILL BLINKING AS IF THE BULB IS BURNED AND THE BRAKE LIGHT DOESN'T WORK SIMULTANEOUSLY IT WORK WHEN THE TURN SIGNAL IS NOT USED. THE CAR WAS TOOK TO THE DEALER SEVERAL TIMES AND THE PROBLEM CONTINUE THE SAME.

NHTSA ID 11455484 · filed Mar 7, 2022

Too few reports in this category for a page of its own — they appear in the full complaint list.

Electrical

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.

4
reports

From owner reports, verbatim

THE REAR TURN SIGNALS AND BRAKES LIGHTS ARE NOT WORKING PROPERLY, EVEN WITH NEW BULBS AND REPLACEMENT OF THE BULBS BASE CASE THE TURN SIGNAL STILL BLINKING AS IF THE BULB IS BURNED AND THE BRAKE LIGHT DOESN'T WORK SIMULTANEOUSLY IT WORK WHEN THE TURN SIGNAL IS NOT USED. THE CAR WAS TOOK TO THE DEALER SEVERAL TIMES AND THE PROBLEM CONTINUE THE SAME.

NHTSA ID 11455484 · filed Mar 7, 2022

MY 2008 IS HAVING THE SAME PROBLEM AS THIS 2009. MERCEDES BENZ IS RECALLING 16,130 MY 2009 M-CLASS W164 PASSENGER VEHICLES EQUIPPED WITH THE OPTIONAL POWER LIFT GATE. AS A RESULT OF A FAULTY SEAL AROUND THE REAR TAIL LAMP ASSEMBLY, WATER MAY ENTER THE REAR COMPARTMENT CONTAINING THE SPARE TIRE. WATER CONTAMINATION OF THE CONTROL UNIT FOR THE POWER LIFT GATE CAN RESULT IN DISABLING OF THE POWER LIFT GATE MOTOR. HAZARD:WATER WILL CAUSE A SHORT CIRCUIT WHICH COULD LEAD TO A FIRE. REMEDY:DEALERS WILL REPLACE THE SEAL OF THE REAR TAIL LAMP ASSEMBLY WITH A THICKER ONE AND REPOSITION THE AFFECTED POWER LIFT GATE CONTROL UNIT INSIDE THE CHASSIS. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING APRIL 2009. OWNERS MAY CONTACT MERCEDES-BENZ AT 1-800-367-6372. ADDITIONAL INFO:MERCEDES BENZ RECALL NO. 2009030003.OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S

NHTSA ID 11067316 · filed Feb 6, 2018

Too few reports in this category for a page of its own — they appear in the full complaint list.

Engine

Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.

4
reports

From owner reports, verbatim

A SEAL FOR THE ENGINE OIL COOLER FAILED. THE COOLER LEAKED OIL ONTO THE UNDER-ENGINE PAN AND WAS NOT DETECTED AS A LEAK ON THE GARAGE FLOOR. HAD THE COOLER FAILED COMPLETELY IT WOULD HAVE CREATED A SAFETY ISSUE IN TRAFFIC. THE SEAL FAILURE APPEARS TO BE A COMMON PROBLEM BUT SHOULD NOT OCCUR UNDER NORMAL USE, WHICH IS HOW THIS VEHICLE IS USED. *TR

NHTSA ID 10683293 · filed Feb 13, 2015

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 ID 10593131 · filed May 21, 2014

Too few reports in this category for a page of its own — they appear in the full complaint list.

Steering

Reports naming the steering system — racks, columns, power-steering assist and steering linkage.

3
reports

From owner reports, verbatim

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 ID 10683289 · filed Feb 13, 2015

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 ID 10664708 · filed Dec 16, 2014

Too few reports in this category for a page of its own — they appear in the full complaint list.

Driver assistance

Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.

2
reports

From owner reports, verbatim

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 ID 10669655 · filed Jan 2, 2015

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 ID 10486587 · filed Nov 30, 2012

Too few reports in this category for a page of its own — they appear in the full complaint list.

Seat belts

Reports naming seat belts, buckles, retractors and pretensioners.

2
reports

From owner reports, verbatim

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 ID 10664708 · filed Dec 16, 2014

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 ID 10557376 · filed Dec 27, 2013

Too few reports in this category for a page of its own — they appear in the full complaint list.

Brakes

Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.

2
reports

From owner reports, verbatim

Right rear brake light inoperative even with new bulb. Dash warning light shows this light not working .08

NHTSA ID 11610621 · filed Aug 24, 2024

TL* THE CONTACT OWNS A 2008 MERCEDES-BENZ ML320. THE CONTACT STATED THAT THE LIFTGATE FAILED TO OPEN. IN ADDITION, THE REAR MIDDLE BRAKE LIGHT FAILED TO ILLUMINATE. THE CONTACT CALLED MERCEDES-BENZ OF FORT LAUDERDALE AT (954) 949-0623 (LOCATED AT 2411 S FEDERAL HWY, FORT LAUDERDALE, FL 33316) AND WAS INFORMED THAT THE VEHICLE WAS NOT INCLUDED IN A RECALL. THE VEHICLE WAS NOT TAKEN TO A DEALER OR AN INDEPENDENT MECHANIC TO DETERMINE THE CAUSE OF THE FAILURE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURES. THE APPROXIMATE FAILURE MILEAGE WAS 108,000.

NHTSA ID 11067323 · filed Feb 6, 2018

Too few reports in this category for a page of its own — they appear in the full complaint list.

Visibility

Reports naming windshields, glass, wipers, defrosters and mirrors.

1
report

From owner reports, verbatim

WATER ENTERED THE VEHICLE (RAIN) STANDING WATER IN THE SPARE TIRE AREA OF THE CAR. THE WINDSHIELD WIPER QUIT WORKING. GOT ERROR MESSAGES ON THE DASH REAR HATCH OPEN, CHECKED REAR HATCH WAS CLOSED AND IT WOULD NOT OPEN EITHER MANUALLY OR USING THE REMOTE OPENER OR THE BUTTON IN THE CAR, MULTIPLE ERROR MESSAGES REAR BRAKE LIGHTS LEFT RIGHT SIDE AND TRAILER, ERROR MESSAGE SRS FAILURE, FUEL GAUGE QUIT WORKING, LOCKS NOT WORKING..... PARKED THE CAR IT WAS RAINING UNABLE TO DRIVE, THE NEXT DAY DROVE IT TO A MECHANIC WHO FOUND 1" OF STANDING WATER IN THE SPARE TIRE WELL. THE LIFT GATE CONTROLLER IS IN THE WELL AND WAS WET AND NOT FUNCTIONING IN ALSO TOOK OUT ANOTHER CONTROLLER PART COST $978.61 LABOR 474.50 I DID NOT HAVE TIME FOR THE MECHANIC TO FIND THE SOURCE OF THE LEAK HE HAD THE CAR 4 DAYS BEFORE THE NEW YEARS DAY WEEKEND (OUT OF TOWN 250 MILES FROM HOME) TOOK IT TO THE MERCEDES DEALER THEY SAID THE 2009 YEAR MODEL HAD A LEAKY SEAL AT THE TURN SIGNALS THAT HAD A RECALL BUT IT DID NOT INCLUDE MY MODEL YEAR ALTHOUGH IT SOUNDS LIKE THE SAME PROBLEM. THE CAR WAS DRIVEN IN THE RAIN I DID NOT ENCOUNTER FLOODED ROADS JUST RAINFALL. MERCEDES WAS UNWILLING TO HELP IN ANY WAY.

NHTSA ID 10817760 · filed Jan 5, 2016

Too few reports in this category for a page of its own — they appear in the full complaint list.

Body & structure

Reports naming the vehicle structure, frame, body panels, doors, hood and trim.

1
report

From owner reports, verbatim

TL* THE CONTACT OWNS A 2008 MERCEDES-BENZ ML320. THE CONTACT STATED THAT THE LIFTGATE FAILED TO OPEN. IN ADDITION, THE REAR MIDDLE BRAKE LIGHT FAILED TO ILLUMINATE. THE CONTACT CALLED MERCEDES-BENZ OF FORT LAUDERDALE AT (954) 949-0623 (LOCATED AT 2411 S FEDERAL HWY, FORT LAUDERDALE, FL 33316) AND WAS INFORMED THAT THE VEHICLE WAS NOT INCLUDED IN A RECALL. THE VEHICLE WAS NOT TAKEN TO A DEALER OR AN INDEPENDENT MECHANIC TO DETERMINE THE CAUSE OF THE FAILURE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURES. THE APPROXIMATE FAILURE MILEAGE WAS 108,000.

NHTSA ID 11067323 · filed Feb 6, 2018

Too few reports in this category for a page of its own — they appear in the full complaint list.

Powertrain (other)

Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.

1
report

From owner reports, verbatim

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 ID 10486587 · filed Nov 30, 2012

Too few reports in this category for a page of its own — they appear in the full complaint list.

Suspension

Reports naming suspension components — springs, struts, shocks, control arms and related hardware.

1
report

From owner reports, verbatim

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

NHTSA ID 10683287 · filed Feb 13, 2015

Too few reports in this category for a page of its own — they appear in the full complaint list.

Airbags

Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.

1
report

From owner reports, verbatim

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 ID 10336023 · filed Jun 13, 2010

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .