What breaks most · 1998 to 2009 model years
Mercedes-Benz ML320 problems by year
Owners have filed 703 safety complaints with NHTSA about the Mercedes-Benz ML320 across model years 1998 to 2009. Three years stand out: 2000 for steering complaints, 1998 for engine and cooling complaints and 2001 for stability control complaints. The quietest years are 2006, 2005 and 2007.
- Years to check closely: 2000, 1998, 2001
- Fewest complaints: 2006, 2005, 2007
- Complaints on file
- 7031998 to 2009, all trims
- Worst year
- 2000159 complaints
- Crashes reported
- 5234 fires · 59 injuries · 0 deaths
- Typical failure mileage
- 76kMedian where owners gave mileage
- Recall campaigns
- 8Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 133 | 9 | 0 | Engine and cooling (31) | |
| 121 | 13 | 0 | Engine and cooling (35) | |
| 159 | 13 | 0 | Steering (42) | |
| 126 | 9 | 0 | Stability control (31) | |
| 85 | 4 | 1 | Steering (24) | |
| 22 | 1 | 0 | Steering (6) | |
| 5 | 2 | 0 | Steering (1) | |
| 1 | 0 | 0 | Powertrain and transmission (1) | |
| 10 | 0 | 2 | Engine and cooling (5) | |
| 17 | 1 | 2 | Exterior lighting (4) | |
| 24 | 0 | 3 | Fuel System, Diesel (5) |
What fails on the 2000 Mercedes-Benz ML320
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| SteeringPower steering pumps, racks and hoses | 26% |
42 | 4 | Shop steering parts for the 2000 Mercedes-Benz ML320 |
| Engine and coolingRadiators, thermostats and cooling | 17% |
27 | 2 | Shop engine and cooling parts for the 2000 Mercedes-Benz ML320 |
| Electrical systemAlternators, starters and ignition | 12% |
19 | 1 | Shop electrical system parts for the 2000 Mercedes-Benz ML320 |
| Brakes (hydraulic)Brake pads, rotors and calipers | 11% |
18 | 2 | Shop brakes (hydraulic) parts for the 2000 Mercedes-Benz ML320 |
| Stability controlABS and wheel speed sensors | 8% |
13 | 0 | Shop stability control parts for the 2000 Mercedes-Benz ML320 |
| Air bags | 8% |
13 | 5 | Check recalls for air bags on NHTSA.gov |
| Powertrain and transmissionTransmission parts | 8% |
12 | 1 | Shop all powertrain and transmission parts, not filtered to this vehicle |
| BrakesBrake pads, rotors and calipers | 8% |
12 | 0 | Shop brakes parts for the 2000 Mercedes-Benz ML320 |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
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My power steering goes out alot and as well leak onto the ground i find it very hard to steer my car at times . The power steering fluid doesn't last very long it's been fixed 1 and the problem persist .
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1998, mercedes ml320, 70,000 miles, both catalytic converters need to be replaced. There is a major campaign for recall on this part for mercedes to replace at no cost to the owner, however, the year of the car is in question. This incident happened 4 months after the 8 year warranty ran out.
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While driving at 40 mph unintended brake application causing loss of control. This has happened numerous times under different speeds and condition. It has happened on curves and straight road conditions. This has been happening since may 2016 at least 15 to 20 times.
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 30, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Mercedes-Benz ML320 years have the most problems?
By NHTSA complaint volume, 2000, 1998, 2001 carry the most filings on the Mercedes-Benz ML320. The 2000 alone has 159 complaints, led by steering.
What is the most common Mercedes-Benz ML320 problem?
On the 2000 model year, the most-reported component is steering with 42 complaints. The table above lists the top components for every year.
At what mileage do Mercedes-Benz ML320 problems start?
The median mileage at failure across all Mercedes-Benz ML320 complaints that include mileage is about 76,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.