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Engine coolingPart report

1994 Mercedes-Benz 420 Engine cooling Problems

Complaints
1about this part
Share
6%of 16 total for the year
Median mileage
65,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the engine cooling of the 1994 Mercedes-Benz 420, 6% of the 16 complaints for this model year. Where a mileage was given, the median is 65,000 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.

“I got 94 e420 benz with defect engine wiring harness. They are cracking. The idle is rough and I got engine code errors. One time the engine failed on the surface street. It was lucky there was no car behind me at that time. My mechanic told me that all mercedes models from 91-96 have this problem. That was so sad that no one has taken action against the factory.”

NHTSA complaint #10189151, filed 2007-04, 65,000 miles

Engine cooling: other model years

YearComplaintsShare of year
199517%
199416%

Other parts of the 1994 Mercedes-Benz 420

Electrical system
5 complaints
Brakes
4 complaints
Other or unknown
4 complaints
Air bags
1 complaints
Seats
1 complaints
Vehicle speed control
1 complaints

← All problems reported for the 1994 Mercedes-Benz 420

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