Total Complaints
6 filings
MERCEDES-BENZ 350 · model year
6 NHTSA complaints, 1 crash report for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1991MERCEDES-BENZ350 carries 6 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 1 crash, 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 1991 350 is air bags:frontal with 1 filings, followed by engine and engine cooling:engine:gasoline:belts and associated pulleys (1) and air bags (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 1991 350. 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
6 filings
Crashes Reported
1 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| AIR BAGS:FRONTAL | 1 |
| ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS | 1 |
| AIR BAGS | 1 |
| FUEL SYSTEM, DIESEL | 1 |
| SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP | 1 |
| ENGINE AND ENGINE COOLING | 1 |
WHILE DRIVING COOLANT LIGHT CAME ON. DEALERSHIP WAS CONTACTED AND CHECKED THE COOLANT LEVEL, WHICH WAS FUEL. DEALERSHIP INDICATED THAT IT MAY BE A DEFECT IN THE SYSTEM THAT WAS CAUSING THIS TO OCCUR. THE VEHICLE IS STILL BE SERVICED FOR THIS PROBLEM.*AK
WHEN ATTEMPTING TO APPLY THE BRAKES, THE BRAKE PEDAL WENT TO THE FLOOR, RESULTING IN EXTENDED STOPPING DISTANCE. THE DEALER WAS NOTIFIED. *AK THE VALVE STUCK INTERMITTENTLY. *SCC *JB
Mileage: 96,000
FUEL LEAKED FROM THE FUEL INJECTION AND GOT INTO THE HEAD GASKET. *JB THERE WAS A STRONG DIESEL SMELL. THE UNDERHOOD WAS SATURATED WITH DIESEL FUEL. THE CONSUMER NOTICED DIESEL FUEL AND OIL AROUND THE TOP OF THE ENGINE. THE CONSUMER ALSO NOTICED WATER BUBBLING WHERE THE INJECTORS SEVERED INTO THE HEAD. *SCC
NO DEPLOYMENT OF AIR BAG DURING HEAD ON COLLISION.
DRIVING VEHICLE AT 65 MPH, BELT TENSIONER BROKE, LOST POWER STEERING & POWER BRAKES, HAD NO CONTROL OF VEHICLE, MANAGED VEHICLE TO SIDE OF ROAD, LIMPED TO GAS STATION THEN HAD IT TOWED TO GARAGE FOR REPAIRS. *AK
DRIVER'S SIDE AIR BAG FAILED TO DEPLOY UPON 55 MPH COLLISION. TT
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.