Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2010 Mercedes-Benz E350 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2010 Mercedes-Benz E350W. The contact stated that while driving at an undisclosed speed, she smelled a gasoline odor within the interior of the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the fuel filter flange. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 12V557000 (Fuel System, Gasoline), but the VIN was not included. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 94,000.
This is in regard to E350 2010. Gas smell after tank fill up (only when full). Fuel pump cover on the driver side under the back seat. The tank cover (plastic) breaks and leaks. Similar problem was noted on previous models (2009) and recall was issued. [redacted] Very hazardous (Flammable and combustible) and the dealer stated that it is a common problem. I removed the back seat and is gasoline leaking and accumulating above the cover. Similar problem occurred on the cover on the right side and was replaced. The plastic cover on both sides breaks and leaks gasoline into the car. Should be recalled and replaced.
The vehicle emit a fuel odor from the rear. This is due to fuel leaks coming from the gas tank assembly. Mercedes Benz had these issue from 2003 to 2009 e class. My car make is 2010- E350 having the above problem besides Takata air bag. What are my options? The dealer doesn't care of the issue. Will Benz resolve the issue ?
Gas leak smell coming from driver side rear of the car. Car only has 40,000 miles. I believe my car has the same problem as with other Mercedes class action lawsuit "2003-09 Mercedes-Benz e-class, 2006-11 cls-class fuel odor". Please reopen the investigation to include E350 2010 model as well.
Strong fuel vapor odor from vehicle when more than 3/4 full. Residue on top of fuel system components under rear seats. Still present after replacing fuel filter, plastic seal-retaining ring and both seals. Recall for fuel system issued one model year prior and one model year after.
Many of us e class owners experience fuel smell coming from top of fuel pump under rear seat. Many complaints on various blogs about this fuel smell leak issue. Dangerous! Obviously plastic gasket and sealing issues! Very prevalent!
Smell gasoline on driver side. Can't fill tank up or the smell is unbearable. Gas consumption is high. Engine light is on , suspension make a lot of noise, and ticking on driver side.
Very strong exterior exhaust odor, like gasoline, consistent and always prevalent but more so when fuel is at half or above. Afraid may spark if near open flame
Smell gasoline when tank get filled up. Engine light is on , suspension make a lot of noise , power steering pump also
Request NHTSA immediately re-open the investigation of Mercedes-Benz' deliberate & continued use of defective fuel system components. The warranty extension offered by mb for 2003-2009 e-class sedans on fuel tank components, including fuel tank, fuel filter/sender, fuel pump & related gaskets/seals/retention rings, is not sufficient. Please require mb to extend the warranty to later model yrs & all e-class vehicles such as 2-dr coupe, not just the sedan. My vehicle has only 48,000 miles (driven <7,000 mi/yr) & fuel sending unit closing cover is now leaking. Gas fumes/leakage is so overwhelming that car cannot be driven or parked in a garage. Driver is in eminent danger of car bursting into flames if a spark or match is lit nearby. Plus owner risks damage/theft/bodily harm now being required to park on street rather than a secured garage. I've owned 8 other vehicles in my lifetime incl. …
Fuel System complaints in other E350 years
Frequently asked questions
How common are fuel system problems on the 2010 Mercedes-Benz E350?
NHTSA has 20 complaints about the fuel & propulsion system of the 2010 Mercedes-Benz E350, 11% of the model year's 184 complaints.
Is there a recall for 2010 Mercedes-Benz E350 fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for the 2010 Mercedes-Benz E350, though it has 4 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2010 Mercedes-Benz E350 fuel system problems start?
Half of the complaints with a recorded mileage happened before about 80,000 miles, and 10% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.