2007 Mercedes Benz Ml320 problems, complaints & recalls
Most-reported problem areas: Seats (3) · Engine And Engine Cooling (3) · Service Brakes, Hydraulic (2)
🧭 Reliability snapshot
Compared against other Mercedes Benz Ml320 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (2)
Service Brakes, Hydraulic:power Assist:vacuum 2024-04-26 · campaign 24V298000 · 15,604 vehicles ⚠ DO NOT DRIVE
Defect: 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.
Risk: Reduced brake performance or brake failure can increase the risk of a crash.
Fix: 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.
Service Brakes, Hydraulic:power Assist:vacuum 2022-05-09 · campaign 22V315000 · 350,294 vehicles ⚠ DO NOT DRIVE
Defect: 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.
Risk: Reduced brake performance or brake failure can increase the risk of a crash.
Fix: 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.
Service bulletins (83)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Service Brakes 2026-09-22 · LI42.10-P-078779 · Service Bulletin/Repair Instructions
complaint repeat workshop visit for vehicle vibration while braking from 60mph. note: although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. cause although the cause of the vibra
Structure:body 2026-09-14 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Structure:body 2026-08-06 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Power Train 2026-07-14 · LI35.30-P-058566 · Service Bulletin/Repair Instructions
single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). the noise is heard once in each instance when changing direction of travel. note: sound file in attachment cause if the complaint is eliminated by experimentally loosening the outboard collar n
Visibility/Wiper 2026-04-20 · LI77.21-P-075806 · Service Bulletin/Repair Instructions
complaint the sliding sunroof glass panel of the panoramic roof reverses during the closing process, either once or multiple times, without an entrapment (anti‑pinch) event being detected. the concern may occur temporarily or repeatedly during normal closing operation. cause the automatic reversing
Exterior Lighting 2026-04-16 · LI82.10-P-078301 · Service Bulletin/Repair Instructions
complaint headlamp, front fog lamp leaky or fogged. cause fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. it does not lead to any technical impairment of the headlamp. if a pressure compensation diaphragm is fitted in the housing cover, then the l
Showing the 6 most recent of 83 bulletins. Search all of them free at nhtsa.gov.
What owners report
2023-01-19 · Fuel/Propulsion System“my 2007 mb ml320 cdi has problem with water entering where spare tire located,after rain or when i use car wash.it builds inside so much water that module for for fuel pump stopped working,all wires were corroded,i paid for repairs from my pocket because mb dealership refused to fix my vehicle even they new mb ml/gl models have issue with water ent…”
2022-10-24 · Power Train“the vehicle would suddenly stop shifting or shift into neutral. this could happen at freeway speeds, where it would suddenly not have any power and just coast or it could be stuck in 4th at a stoplight and not be able to move. …”
2022-10-13 · Service Brakes“premature line corrosion on all of the steel hard lines. the brake lines are corroded and blistered and one of the lines are leaking fluid. …”
2022-09-06 · Air Bags:side/Window:curtain“sts light on with message saying right curtain airbag malfunction visit workshop…”
2022-08-02 · Service Brakes, Hydraulic“the contact owns a 2007 mercedes-benz ml320. the contact received notification of nhtsa campaign number: 22v315000 (service brakes, hydraulics) however, the part to do the recall repair was not yet available. the dealer was made aware of the issue. the contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repa…”
2022-06-08 · Service Brakes, Hydraulic“the contact owns a 2007 mercedes-benz ml320. the contact was made aware of nhtsa campaign number: 22v315000 (service brake, hydraulic) however, the part to do the recall repair was not yet available. the local dealers mercedes-benz of seattle (2025 airport way s, seattle, wa 98134:(206) 324-5959) and mercedes-benz of lynnwood (17800 hwy 99, lynnwoo…”
2018-05-01 · Engine And Engine Cooling:exhaust System:emission Control:gas Recirculation Valve (Egr Valve) · 224,000 mi · 🔥 fire“tl* the contact owns a 2007 mercedes-benz ml320. while the contact was merging into highway traffic, white and gray was seen under the hood of the vehicle. the contact pulled the vehicle over to the side of the road and turned off the engine. prior to the failure, the vehicle hesitated while driving. the contact pointed out that the vehicle was equ…”
2016-03-11 · Seats · 229,000 mi“seat back warmer overheats/burns small burn - the drivers side seat seat warmer burned a whole through the material and through my wife jacket causing a small burn above her left leg. basically a thermal incident in which the seat has a hole the size of a quarter burned through the seat cover. was driving home from work.…”
2014-04-14 · Power Train · 50,000 mi“years ago, while driving through new mexico, my dash and command center flashed off and rebooted. it was a little concerning because we were using the gps exclusively for our directions. there was also a transmission warning light that came on warning us to get to the nearest dealer, without shifting gears. this happened perhaps 10-15 times until i…”
2012-05-01 · Engine And Engine Cooling · 82,000 mi“tl* the contact owns a 2007 mercedes benz ml320. the contact was driving 55 mph when the check engine warning light illuminated on the instrument panel. the vehicle was taken to the dealer for diagnosis where the dealer stated that the emission control needed to be replaced. the vehicle was repaired. the manufacturer was contacted and advised that…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.