1994 Mercedes-Benz S Class Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 1994 Mercedes-Benz S Class, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical1292.3%
- Suspension17.7%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
MERCEDES-BENZ ENGINE WIRING HARNESS DEFECT CONCERNING THE CHRONIC ENGINE COMPARTMENT WIRING HARNESS FAILURE SUFFERED BY (AT LEAST) 1992 THROUGH 1995 MERCEDES BENZ AUTOMOBILES. I AM OUTRAGED AT MERCEDES-BENZ' REFUSAL TO TAKE RESPONSIBILITY FOR THIS DESIGN DEFECT. I DO NOT UNDERSTAND WHY NHTSA HAS NOT INVESTIGATED THIS DANGEROUS FAULT, ESPECIALLY WITH THE HUGE NUMBER OF COMPLAINTS. ONE STARTS TO WONDER IF NHTSA HAS BEEN PAID TO LOOK THE OTHER WAY. *TR
INSTRUMENT CLUSTER DOSE NOT FULLY WORK. THE TEMP GAUGE IS THE ONLY ONE THAT WORKS ALL THE TIME. THE REST OF THE TIME, THE CLUSTER MAY WORK FOR A TIME THEM STOP FUNCTIONING ALTOGETHER. *TR
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
MERCEDES DEALER REPAIR SHOP REPORTED TO ME THAT THE WIRING HARNESS IS MADE OF BIODEGRADABLE MATERIAL AND HAD TO BE REPLACED. THE FAULTY HARNESS CAUSED SEVERAL PROBLEMS WITH ENGINE, INCLUDING ACCELERATION. I HAD THE PART REPLACED IN 2000 AND DO NOT HAVE THE ORIGINAL. BOTH CATALYTIC CONVERTERS WENT BAD AT 100,000 MILES FOR NO REASON. MAKES CAR RUN ROUGH, ESPECIALLY ON ACCELERATION. MERCEDES MECHANIC STATES IT IS A FIRE HAZARD, AND COST TO REPLACE EXCEEDS $2200. SHOULD HAVE BEEN INCLUDED IN RECALL FOR LATER MODELS. SUSPENSION IS BAD IN THE REAR EVEN AFTER PARTS HAVE BEEN REPLACED. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .