IllustrationFUEL 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
1991 Mercedes Benz 350
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all 350 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
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 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.
- Air Bags. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Diesel. 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.
1 crash reports0 fire reports0 injury reports
Fuel System, Diesel complaints
1 reportsOfficial recalls
0No 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
0No exact-year investigations in this snapshot.