Total Complaints
4 filings
MERCEDES-BENZ S CLASS · model year
4 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1997MERCEDES-BENZS CLASS carries 4 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 1997 S CLASS is electrical system:wiring with 1 filings, followed by electrical system:wiring:front underhood (1) and electrical system:software (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 1 investigation file overlapping the 1997 S 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
4 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| ELECTRICAL SYSTEM:WIRING | 1 |
| ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD | 1 |
| ELECTRICAL SYSTEM:SOFTWARE | 1 |
| ELECTRICAL SYSTEM | 1 |
THE ENGINE WIRING HARNESS FOR THE ENGINE OF A 1997 MERCEDES-BENZ S500 HAS DISINTEGRATED DUE TO A MANUFACTURING DEFECT. THE MERCEDES MANUFACTURER SEEMED TO HAVE USED AN INFERIOR AN UNSUITABLE INSULATION FOR THE WIRES, WHICH, FOR NO REASON OTHER THAN TIME, DETERIORATE ALLOWING THE WIRES TO SHORT AND PREVENT THE VEHICLE FROM FUNCTIONING AS WELL AS CREATING A HAZARDOUS SITUATION SUCH AS FIRE IN ENGINE AND ETC. THE MERCEDES MANUFACTURER IS AWARE OF THE DEFECT BUT REFUSES TO PROVIDE A SOLUTION OR TO ASSIST IN ANY WAY. *TR
Mileage: 140,000
MULTIPLE FAILURES, WITH DEGRADATION OF INSULATION ON WIRING IN THIS VEHICLE. *TR
Mileage: 83,000
MULTIPLE FAILURES, WITH DEGRADATION OF INSULATION ON WIRING IN THIS VEHICLE. *TR
Mileage: 83,000
MULTIPLE FAILURES, WITH DEGRADATION OF INSULATION ON WIRING IN THIS VEHICLE. *TR
Mileage: 83,000
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.