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EnginePart report

1993 Mercedes-Benz 400E Engine Problems

Complaints
2about this part
Share
11%of 19 total for the year
Median mileage
229,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the engine of the 1993 Mercedes-Benz 400E, 11% of the 19 complaints for this model year. Where a mileage was given, the median is 229,000 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.

“The fuel injection engine harness wiring has completely deteriorated due to the use of a bio degradable material by mercedes benz. Has resulted in a lot of shorting issues, which resulted in air conditioning turning off, fan control off, engine heating up, blue and black smoke, and now smog failure. This is a known problem to mercedes and they need to fix it. I have had over $4000 repairs and still need to get the engine harness changed, which is a custom par and mercedes will take 2 months to build and the repair estimate on my car is over $8000 by mercedes steven creek. …”

NHTSA complaint #10692130, filed 2015-03, 180,000 miles

“Faulty wiring in engine harness resulted in loss of power at speed on a major interstate, luckily at the time I was able to get off the road safely. It was determined that the car's charging system had been shorted out. Still waiting on other system tests. This is a known problem with certain mercedes. Why isn't anything being done about this?”

NHTSA complaint #10484072, filed 2012-11, 278,000 miles

Engine: other model years

YearComplaintsShare of year
1993211%

Other parts of the 1993 Mercedes-Benz 400E

Electrical system
14 complaintsEngine cooling
2 complaintsVehicle speed control
2 complaintsElectronic stability control
1 complaintsFuel system
1 complaintsOther or unknown
1 complaints

← All problems reported for the 1993 Mercedes-Benz 400E

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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