1993 Mercedes-Benz 300SD 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 1993 Mercedes-Benz 300SD, 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
- Electrical457.1%
- Engine114.3%
- Steering114.3%
- Tires & wheels114.3%
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
TL* THE CONTACT OWNS A 1993 MERCEDES-BENZ 300SD. THE CONTACT STATED THAT THE INSULATION HAD EXPOSED AND BURNT WIRES. THE CONTACT CALLED ARLINGTON MERCEDES-BENZ (585 N GLEBE RD, ARLINGTON, VA 22203, (703) 525-2100) AND WAS INFORMED THAT THEY NO LONGER HAD PARTS FOR THE VEHICLE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 141,172.
THE ENGINE WIRING HARNESS OF MY 1993 MERCEDES-BENZ 300SD HAS CRACKED INSULATION THROUGHOUT AND IS BEGINNING TO SHORT-CIRCUIT WITH THE RISK OF CAUSING DANGEROUS ENGINE MALFUNCTION AND FIRE. I HAVE READ MANY REPORTS OF OTHER MERCEDES-BENZ CARS OF THE SAME AGE RANGE 1992-1997 HAVING THE EXACT SAME DEFECT "ECO WIRING". JUST LOOK AT ANY ONLINE FORUM OR TALK TO ANY MERCEDES TECHNICIAN. THIS IS A KNOWN ISSUE WITH MERCEDES THAT THEY REFUSE TO RECALL.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
I PURCHASED A 1993 MERCEDES BENZ-300SD THROUGH A LOCAL BUSINESS MAN IN COLUMBIA, SC WHO HAD THE CAR ON LEASE. I PAID THE LEASING COMPANY, MERCEDES CORPORATION FOR THE CAR. THIS CAR HAD TO HAVE A NEW MOTOR AT 46,000 MILES. I AM NOW TOLD THAT I MIGHT HAVE TO HAVE ANOTHER MOTOR. I HAVE HAD TO REPACE THE MOTOR FOR THE FAN THAT RUNS THE AIR/HEAT; REPLACE UNITS THAT CONTROLS THE FACTORY INSTALLED TELEPHONE AND NOW AM BEING TOLD THAT THE NEW MOTOR WILL COST FROM $10,000 TO $12,000. I AM HAVING PROVLEMS KEEPING FREON IN THE AIR CONDITIONER AND HAVE BEEN TOLD THAT THIS MIGHT COST UP TO $2,500; ALSO I WAS TOLD THAT I NEED BUSHINGS WHICH HAS BEEN ESTIMATED AT $2,000. I BELIEVE THAT I HAVE A LEMON SITUATION. I DID CONTACT THE COMPANY'S REPRESENTATIVE AND HE TELLS ME THAT THERE IS NOTHING HE CAN DO. I NEED YOUR HELP VERY DESPERATELY. WHATEVER YOU CAN DO, CONTACT THEM OR WHATEVER WILL BE GREATLY APPRECIATED. THE REPRESENTATIVE THAT I SPOKE WITH WAS RICE BYERLY.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
UNCONTROLABLE STEERING SHAKE AT 50 MPH
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
WAS TRAVELING ABOUT 65MPH ON HIGHWAY AND VEHICLE WAS SHAKING AND VIBRATING. ALSO, LOST CONTROL FOR A FEW MONUTES. HE STEERED T VEHICLE TO SAFETY. DRIVER'S REAR TIRE TREAD SEPARATED. *AK
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 .