AI Damage2008 Mercedes-Benz ML550: common problems
Owners of the 2008 Mercedes-Benz ML550 filed 18 complaints with NHTSA, most often about electrical system and steering. Details by component below, with sources.
Key figures
- Owner complaints
- 18
- involving a crash
- 1
What fails most often
- 1 Electrical system 28% of all complaints
- 2 Steering 22% of all complaints
- 3 Air bags 11% of all complaints
- 4 Seat belts 11% of all complaints
- 5 Service brakes 11% of all complaints
- 6 Backover prevention 6% of all complaints
- 7 Engine 6% of all complaints
- 8 Engine and cooling 6% of all complaints
- Electrical system: 5 complaints (28% of all).
- Steering: 4 complaints (22% of all).
- Air bags: 2 complaints (11% of all), 1 of them with a crash reported by the owner.
- Seat belts: 2 complaints (11% of all).
- Service brakes: 2 complaints (11% of all).
Symptoms owners describe
How many of the 18 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 5 | 0 | 0 |
| Steering | 4 | 0 | 0 |
| Air bags | 2 | 1 | 0 |
| Seat belts | 2 | 0 | 0 |
| Service brakes | 2 | 0 | 0 |
| Backover prevention | 1 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
| Exterior lighting | 1 | 0 | 0 |
| Fuel/propulsion system | 1 | 0 | 0 |
| Suspension | 1 | 0 | 0 |
| Tires | 1 | 0 | 0 |
| Other | 2 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Takata recall. I had an auto collision in 2008, where vehicle front had to be replaced. My insurance company (aaa) paid $40,000.00 for repairs. The airbags didn't activate. Maybe I should thank the lord, it didn't activate.
Engine died and won't run. Known issue with MB balance shaft that they refuse to repair or help with the cost of a $8k job. Highly disappointed.
The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue.
Cooper Tire Evolution 245/65R17 - Tire Tread Separation - the entire tread out layer came off of the driver side front tire while driving on the freeway - the tire was not deflated - the entire tread hit the driver side mirror breaking it completely off - hitting driver window and deploying all airbags on driver side…
back sit the seat belt locks in place and it does not lose its locked mechanics. I have found that several people are having the same problem. here is a link to a website Video describing the problem. [link] I have found the problem is a small baring locking the belt. Please let me know if you need more info.
no lights no fuel gauge no remote no turn signal while driving almost had an accident
My NHTSA #11431874 I have made a complaint about my back computer was damage by water where the is installed on the right side of my car now I found out that the reason my chairs are not moving is because the electrical is also damage this is so unfair the problem is not my car but the ways and place they installed…
Since I purchased the car, the suspension has been a major issue. When the suspension is faulty, sometimes the car is stuck down- not allowing the car to rise so whenever I drive through a speed bump, my car scrumps/scratches the bump. I have to fix it twice or more every year and it is quite frustrating.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 8,624 of 36,659 model years in the NHTSA data (top 24% most complained about).
On average one model year of the ML550 has 6 complaints (7 years in the data). This year has 18, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Seat belts. Belt pretensioners after airbag deployment, SRS codes.
Other years of this model
Questions and answers
What are the most common problems with the 2008 Mercedes-Benz ML550?
Owner complaints to NHTSA most often mention: electrical system, steering, air bags. Total complaints: 18. The most frequent symptoms in complaint texts: seat belts (11%), steering or power steering problems (11%), fuel system, fuel smell (6%).
How many service bulletins (TSB) were issued for the 2008 Mercedes-Benz ML550?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2008 Mercedes-Benz ML550 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2008 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.