Total Complaints
2 filings
MERCEDES-BENZ SL CLASS · model year
2 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1996MERCEDES-BENZSL CLASS carries 2 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1996 SL CLASS is electrical system:wiring:front underhood with 1 filings, followed by engine and engine cooling (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 1996 SL CLASS. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
2 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD | 1 |
| ENGINE AND ENGINE COOLING | 1 |
MY 1996 MERCEDES SL600 FAILED EMISSIONS TESTING BECAUSE THE OBDII SYSTEM CHECK REPORTED 5 MONITORS WERE "NOT READY". AFTER GREAT EXPENSE ATTEMPTING TO FIX THE PROBLEMS INDICATED BY THIS OUTPUT, I DISCOVERED THROUGH INTERNET SEARCHES AND COMMUNICATIONS WITH ILLINOIS EPA THAT THIS IS A KNOWN PROBLEM WITH EARLY 1996 V12 EQUIPPED AUTOMOBILES (I WAS TOLD THAT MY CAR WAS MANUFACTURED IN NOVEMBER 1995). ON THESE EARLY 1996 CARS, THE GENERIC OBDII PORT DOES NOT ACCURATELY REPORT THE STATUS OF THE ENGINE SYSTEM MONITORS. THE PROPRIETARY MERCEDES PORT REPORTS THAT ALL MONITORS ARE READY, BUT THE EMISSIONS TESTING FACILITY CAN NOT ACCESS THIS WITHOUT THE PROPRIETARY MERCEDES SCANNER. MY UNDERSTANDING IS THAT ALL MANUFACTURES SELLING CARS IN THE U.S. WERE REQUIRED TO PROVIDE A WORKING GENERIC OBDII OUTPUT. IN MY OPINION, MERCEDES FAILED TO MEET THIS STANDARD WITH THESE EARLY 1996 V12 EQUIPPED CARS AND SHOULD BE REQUIRED TO BRING THEM UP TO THIS STANDARD AT NO EXPENSE TO THE OWNERS. *TR
Mileage: 55,000
1996 MERCEDES BENZ SL 600 WIRING HARNESS FAILURE AUTHORIZED DEALER REPORTS THAT THIS IS A TYPICAL FAILURE OF AN OLDER MERCEDES WITH ONLY 60,000 MILES. THIS FAILURE IS KNOW THROUGH OUT THE INDUSTRY BUT IT HAS NEVER BEEN RECOGNIZED BY MB CONSEQUENTLY NO RECALL. THE CAR RUNS SLUGGISHLY AND I HAVE BEEN WARNED THAT IT IS A FIRE HAZARD. COST OF REPAIR IS ESTIMATED AT $3100????? *JB
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.