Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 1 of 1 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Electrical System. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
What owners actually said
1 reports
195,560 miles · Jun 17, 2014
Electrical System
ENGINE WIRING HARNESS PART# 140 540 2005. THIS HARNESS HAS COMPLETELY DETERIORATED CAUSING THE ENGINE TO BE INOPERABLE. AFTER MONTHS OF RESEARCH ONLINE AND PHONE CALLS TO MB I HAVE NO PARTS AND NO ANSWERS TO THE PROBLEM. SO MANY OF THESE CARS HAVE HAD THESE PROBLEMS AND YET NO RECALL HAS BEEN ISSUED. WHY? IT IS A FIRE WAITING…
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ENGINE WIRING HARNESS PART# 140 540 2005. THIS HARNESS HAS COMPLETELY DETERIORATED CAUSING THE ENGINE TO BE INOPERABLE. AFTER MONTHS OF RESEARCH ONLINE AND PHONE CALLS TO MB I HAVE NO PARTS AND NO ANSWERS TO THE PROBLEM. SO MANY OF THESE CARS HAVE HAD THESE PROBLEMS AND YET NO RECALL HAS BEEN ISSUED. WHY? IT IS A FIRE WAITING TO HAPPEN. THERE ARE MANY HARNESS AVAILABLE FOR VARIOUS MODELS WITH THE INFAMOUS "BIODEGRADABLE" WIRING PROBLEM. THERE ARE MANY DIFFERENT PRICE RANGES ALSO, BUT THEY ARE AVAILABLE. AS FOR THE ONE THAT I NEED IT IS NOT AVAILABLE AT ANY COST. THIS IS ABOVE ALL THE MOST CONFUSING AND UNBELIEVABLE THING I HAVE HEARD CONCERNING AN ISSUE FOR WHICH THE MANUFACTURER KNOWS IS A PROBLEM. THE NHTSA NOT RECOGNIZING THIS AS A SAFETY PROBLEM IS ABSOLUTELY UNACCEPTABLE. YOU WOULD THINK THE COMPANY THAT INVENTED THE AUTOMOBILE WOULD STEP UP AND GIVE A RESOLUTION TO THE PROBLEM. *TR
NHTSA ODI #10598965
Official recalls
0
No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
1992 Mercedes Benz 300SD Problems, Complaints & Recalls | Skip That Year
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