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: 6 of 6 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 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Air Bags. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Engine. 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 reports1 fire reports0 injury reports
What owners actually said
6 reports
50 miles · May 12, 2018
Electrical SystemFire
MY 1993 MER BENZ FFIRST STARTED TO LOSE ITS POWER KINDA LIKE LIMP MODE CUZ THE RPM WOULDNT GO PAST 2,000 UNTIL ONE DAY IT STARTED SMOKING REALLY BAD THRU THE VENTS AND FROM UNDER THE HOOD UNTIL THE CAR TURNED OFF AND HASNT TURNED BACK ON SINCE I HAD THE CAR TOWED TO A LOCAL. SHOP WHERE I WAS INFORMED ABOUT THE FIRE THE WIRING HA…
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MY 1993 MER BENZ FFIRST STARTED TO LOSE ITS POWER KINDA LIKE LIMP MODE CUZ THE RPM WOULDNT GO PAST 2,000 UNTIL ONE DAY IT STARTED SMOKING REALLY BAD THRU THE VENTS AND FROM UNDER THE HOOD UNTIL THE CAR TURNED OFF AND HASNT TURNED BACK ON SINCE I HAD THE CAR TOWED TO A LOCAL. SHOP WHERE I WAS INFORMED ABOUT THE FIRE THE WIRING HARNESS HAD STARTED DUE TO THE WIRES LOSING ITS INSULATION
NHTSA ODI #11093439
55,000 miles · Sep 9, 2015
Electrical SystemEngine
BAD WIRING HARNESS. INSULATION DANGEROUSLY DEGRADED WITHIN SHEATHING, CAUSING A SHORT IN MY ENGINE. THIS SHOULD BE A MERCEDES RECALL WITH PARTS AND LABOR REPAIRS PAID BY MERCEDES. THIS PROBLEM IS AS SERIOUS AS THE RECENT IGNITION SWITCH PROBLEMS. HAD THIS HAPPENED ON THE INTERSTATE THIS COULD HAVE EASILY CAUSED A MULTIPLE …
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BAD WIRING HARNESS. INSULATION DANGEROUSLY DEGRADED WITHIN SHEATHING, CAUSING A SHORT IN MY ENGINE. THIS SHOULD BE A MERCEDES RECALL WITH PARTS AND LABOR REPAIRS PAID BY MERCEDES. THIS PROBLEM IS AS SERIOUS AS THE RECENT IGNITION SWITCH PROBLEMS. HAD THIS HAPPENED ON THE INTERSTATE THIS COULD HAVE EASILY CAUSED A MULTIPLE FATALITY WRECK. PLEASE CONTACT ME ASAP!
NHTSA ODI #10762699
146,000 miles · May 31, 2011
Engine And Engine Cooling
TL*THE CONTACT OWNS A 1993 MERCEDES BENZ SL500. THE CONTACT STATED THE INSULATION OVER THE COPPER WIRING HARNESS WHEN IT WAS EXPOSED TO THE HEAT IN THE ENGINE BECAME EXPOSED WHICH CAUSED THE VEHICLE TO NOT WORK PROPERLY. THE VEHICLE WAS TAKEN TO THE DEALER WHO OFFERED NO ASSISTANCE AND THE CONTACT WAS TOLD THERE WERE NO RECALLS …
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TL*THE CONTACT OWNS A 1993 MERCEDES BENZ SL500. THE CONTACT STATED THE INSULATION OVER THE COPPER WIRING HARNESS WHEN IT WAS EXPOSED TO THE HEAT IN THE ENGINE BECAME EXPOSED WHICH CAUSED THE VEHICLE TO NOT WORK PROPERLY. THE VEHICLE WAS TAKEN TO THE DEALER WHO OFFERED NO ASSISTANCE AND THE CONTACT WAS TOLD THERE WERE NO RECALLS OR WARRANTIES. THE MANUFACTURER WAS CONTACTED AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 146,000.
NHTSA ODI #10403922
60,000 miles · Mar 8, 2010
Electrical System
WIRING INSULATION BREAKING DOWN IN THE WIRING HARNESS IN THE ENGINE CONTROLS CAUSING DAMAGE INSULATION HAS COME OFF AND WIRES BARE AND TOUCHING . *TR
NHTSA ODI #10317729
100,000 miles · Mar 8, 2010
Electrical System
ELECTRICAL WIRING INSULATION IS DEGRADING ON WIRING HARNESS(S) IN ENGINE COMPARTMENT. THIS IS A POTENTIAL FIRE HAZARD WHICH COULD LEAD TO LOSS OF LIFE OR SERVE PROPERTY LOSS. I FEEL MERCEDES SHOULD PROVIDE COMPLETE REPLACEMENT OF THESE WIRING HARNESS'S ON AFFECTED MODEL SL500, YEARS 1991 THRU 1996 REGARDLESS OF THE MILEAGE. *T…
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ELECTRICAL WIRING INSULATION IS DEGRADING ON WIRING HARNESS(S) IN ENGINE COMPARTMENT. THIS IS A POTENTIAL FIRE HAZARD WHICH COULD LEAD TO LOSS OF LIFE OR SERVE PROPERTY LOSS. I FEEL MERCEDES SHOULD PROVIDE COMPLETE REPLACEMENT OF THESE WIRING HARNESS'S ON AFFECTED MODEL SL500, YEARS 1991 THRU 1996 REGARDLESS OF THE MILEAGE. *TR
NHTSA ODI #10317711
72,000 miles · Jun 9, 2007
Air Bags
A YEAR AFTER PURCHASING THIS BEAUTY THE AIR BAG LIGHTCOME ON AND WILL NOT GO OFF. THE PERFORMANCEWAS GREATLY EFFECTED AND IT BROKE MY HEART TO LOSE MY BRAGGING RIGHTS ON THE 1993 500SL , ONLY 68000 MILES. *AK PLEASE FIND A WAY FOR ME TO AFFORDABLY FIX THIS.
NHTSA ODI #10192826
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.
1993 Mercedes Benz SL500 Problems, Complaints & Recalls | Skip That Year
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