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BrakesPart report

2004 Mercedes-Benz ML350 Brakes Problems

Complaints
4about this part
Share
11%of 35 total for the year
Median mileage
30,020miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the brakes of the 2004 Mercedes-Benz ML350, 11% of the 35 complaints for this model year. Where a mileage was given, the median is 30,020 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“While driving on a local street, I noticed that brakes had stopped working. After investigation, I noticed that a corroded brake line was leaking brake fluid. I had contacted mercedes benz customer service. I was told to contact a dealer, who confirmed that all brake lines are corroding in the area close to the engine compartment. I was told that this is not a safety issue subject to a recall. I was further told that it is normal for brake lines to corrode and leak. I have not noticed corrosion on any other part of the car, except the brake lines.”

NHTSA complaint #10525310, filed 2013-07, 50,000 miles

“Thank you for your responses but we are very disappointed and very frustrated with your response. During these 2 year things have gone wrong. We did contact Mercedes-Benz headquarters..market too many times and explain about us car. But they are ignore now we are in the process of launching a lawsuit to replace my 04 ml 350 on the basis of safety. The engine failed 18 times on the road (in addition to all kinds of other problems). …”

NHTSA complaint #10165343, filed 2006-08

“The contact owns a 2004 mercedes benz ML350. While driving 30 MPH, the brake pedal was depressed and traveled all the way down to the floorboard without warning. The contact was able to stop the vehicle by slowing down on a curb. The vehicle was towed to the dealer, but was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 10,040.”

NHTSA complaint #10763996, filed 2015-09, 10,040 miles

Related service bulletins

Brakes: other model years

YearComplaintsShare of year
2015612%
201411%
201359%
201235%
20111917%
201066%
200966%
2008812%
200756%
20062112%
200529%
2004411%

Other parts of the 2004 Mercedes-Benz ML350

Steering
6 complaints
Air bags
5 complaints
Electrical system
4 complaints
Fuel system
4 complaints
Seats
4 complaints
Engine cooling
3 complaints
Engine
2 complaints
Exterior lighting
2 complaints
Other or unknown
2 complaints
Body and structure
2 complaints
Equipment
1 complaints
Tires
1 complaints

← All problems reported for the 2004 Mercedes-Benz ML350

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology