1997 Mercedes-Benz 420 Fuel system Problems
- Complaints
- 2about this part
- Share
- 9%of 22 total for the year
- Median mileage
- 123,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 1997 Mercedes-Benz 420, 9% of the 22 complaints for this model year. Where a mileage was given, the median is 123,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I recently had a gas tank pressure sensor replaced on my 1997 e model mercedes. Upon inspection of the interior of the gas tank, it was discovered that the return lines inside the tank had become disconnected which could result in loss of tank pressure, leakage, and /or improper emission system sensor readouts. The tank has not been damaged due to mpact so the disconnected line appears to be a design or engineering defect. In addition, the improper functioning of the return line equipment within the gas tank has a major impact on gas mileage. …”
NHTSA complaint #10133880, filed 2005-08, 123,000 miles“The gas tank on my mercedes benz e420 collapsed. It looked like a giant stepped on it. Prior to the tank collapsing the check engine light came on and I had to have the fuel evaporation system repaired. I took the car to berberian european motors (a mercedes benz dealer) in stockton ca. For repair. This failure is supposed to be covered by my califorina emission control warranty. The mercedes benz factory rep. Said that they were not going to fix the problem under the warranty and I had to pay for all the repairs myself. …”
NHTSA complaint #714366, filed 1999-11Fuel system: other model years
Other parts of the 1997 Mercedes-Benz 420
11 complaintsTransmission and drivetrain
3 complaintsSeat belts
2 complaintsExterior lighting
1 complaintsLatches, locks and linkages
1 complaintsSeats
1 complaintsBody and structure
1 complaintsVehicle speed control
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 1997 Mercedes-Benz 420
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology