2017 Mercedes-Benz E-Class Fuel System Problems

Strong smell of Fuel or exhaust fumes in the cabin, while vehicle is idling, parked or stoped at the light.

The contact owns a 2017 Mercedes-Benz E300. The contact stated that while driving at an undisclosed speed, there was a strong gasoline odor entering the vehicle through the vents, and the odor was on the interior and exterior of the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer for an oil change; however, the vehicle was not inspected or repaired. The contact stated that the failure persisted. The contact related the failure to NHTSA Campaign Number: 21V961000 (FUEL SYSTEM, GASOLINE); however, the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was approximately 59,000.

The contact owns a 2017 Mercedes-Benz E300. The contact stated while driving at an undisclosed speed, the contact noticed gasoline odor inside the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed with a fuel leak. The contact was informed that the fuel rail and fuel injector needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The contact was informed of NHTSA Campaign Number: 21V961000 (Fuel System, Gasoline); however, the VIN was not included in the recall. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 72,100.

Strong gas fumes smell from vehicle when parked. Issue starts around 50k miles. No lights on dash or anything. Multiple people in forums online experience the same issue around the same mileage. Some say it's a leak from fuel lines to the fuel pump.

Vehicle stalled while on the highway on [XXX]. There are open recalls for the fuel pump and components for my vehicle make and model, but not MY vehicle. My VIN doesn’t show active recalls. The recall needs to be extended. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2017 Mercedes-Benz E300. The contact stated that the vehicle was purchased on October 20, 2023. The contact stated that when she entered the vehicle the following day, the exterior of the vehicle smelled of gasoline. The contact stated that the fuel odor had become so abnormally strong inside the vehicle, causing her mother’s asthma to flare up. The vehicle was taken to the dealer. The vehicle was diagnosed with a low-pressure and high-pressure fuel line leak in the engine compartment. The contact was informed that the fuel line and fuel pump needed to be replaced. The vehicle was not repaired. The dealer advised the contact that the parts to complete the repair were ordered. The manufacturer was not made aware of the failure. The failure mileage was approximately 31,806.

The contact owns a 2017 Mercedes-Benz E300. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the vehicle stalled, and the engine misfired. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed with failed fuel injectors and failed fuel rail. The contact was informed that the fuel injectors and the fuel rail needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 72,000.

The contact owns a 2017 Mercedes-Benz E300. The contact stated while driving approximately 35 MPH, there was an abnormal gasoline odor entering the vehicle. The contact stated that he did not notice a warning light being illuminated. The contact had taken the vehicle to a local dealer who was unable to determine the cause of the failure. The contact then drove the vehicle to an independent mechanic who diagnosed the vehicle and determined that the fuel rails and fuel injectors needed to be replaced. The vehicle had not been repaired. The independent mechanic advised the contact that the failure was related to NHTSA Campaign Number: 21V961000 (Fuel System, Gasoline). The manufacturer had been informed of the failure. The failure mileage was approximately 68,000.

There was a smell of gasoline in and outside the car when the car was idling. Also, a smell of gasoline in the garage around the parked car. Also a smell of gasoline after starting the car, that went away after driving. I called the service department. They gave me an appointment one week later. I have no complaints about the service dept. When the car was repaired several hours later, the report stated "found seep at fuel hose to pump", and then, "replaced upper fuel hose to high pressure fuel pump". They told me it was no charge because they knew about this problem happening in their vehicles and had extended the warranty for it. I was/am very concerned because(1.) if I had been in an accident, could have more easily been a fire? (2.) Mercedes knew about this and to my knowledge have not let customers know, (3) I kept up with all maintenance/service visits and I was never told to be aware of this possibility, (4) when reported by me, there was no procedure in place to prioritize scheduling this repair. I may be wrong in my analysis and do not want to cause anyone any trouble. I just think if one car fire can be avoided that is important. If my thinking is incorrect, I apologize sincerely for my reaction to this situation.

There is a smell of gas inside the cabin coming from the vents

Vehicle emits a strong odor of gasoline when cold. It was mainly noticeable on the outside of the car at first, but now when I turn on the air inside the car (not on AC mode), I started smelling the odor of gas in the cabin. I have taken the car for possible repairs, but am told on two separate occasions by an independent service center that the odor can not be duplicated. There are recalls for the same issue on different models, but as of yet, not on this particular year model. I have notice that when the car sit overnight and when I open any door, trunk or push the lock button on the car's remote, a few seconds later, it starts emitting the smell of gasoline. The car is always parked overnight inside my garage, hence the smell is very strong.

There was a fuel smell in the cabin of the car. Gar is parked in an enclosed garage. There was a major risk of fire to the car and the house. There were no warning signs! Problem has been confirmed and repaired at owners expense.

STRONG PERSISTENT ODOR OF GASOLINE IN THE CABIN ON COLD START

Fuel leak make gas smell goes inside cabin

STRONG SMELL OF PETROL IN THE MORNINGS, SEEMS TO BE UNDER THE HOOD. I INSPECTED THE FUEL LINES FROM THE FUEL TANK TO THE ENGINE UNDERNEATH AND COULD NOT FIND ANY DRIPS OR WETNESS. DID SOME RESEARCH ONLINE. THERE WAS A RECALL ON OTHER MODELS FOR THIS PROBLEM. I CALLED MERCEDES CUSTOMER SERVICE BUT THERE IS NOT A RECALL FOR THIS ON THE 2017 MERCEDES E300

LOW PRESSURE FUEL LINE NEEDED REPLACING. THIS WAS DUE TO A FUEL SMELL IN THE CABIN WHEN COLD. MERCEDES INDICATED FUEL LINES ARE CONSIDERED WEAR AND TEAR AND EVEN THOUGH IT WAS LEAKING , WAS NOT COVERED UNDER PRE OWNED WARRANTY OR RECALL. THE FUEL LINE APPEARS CRACKED DUE TO MISINSTALLATION VS RUBBER CRACKING DUE TO AGE AS ONE SIDE WAS PRISTINE AND THE OTHER HAD A CRACK IN IT. THIS IS NOTICEABLE AT IDLE , WHEN THE CAR IS COLD AND THE HEAT IS BLOWING.

Very strong gas smell coming from car especially in cool weather temperatures. The smell disappears when the car runs for a while but it’s terrible on cold starts. High or low pressure fuel line is the cause of it. Smell would disappear before reaching shops for diagnosis. Many other owners of same exact model experiences this as well.

STRONG FUEL SMELL IN THE CABIN WHEN I START THE CAR IN THE MORNING. I'M SEEING THIS AS A COMMON ISSUE IN THREADS ONLINE. CAR OUT OF WARRANTY SO NEED HELP MAKING THIS A RECALL ITEM GIVEN THE DANGER OF FUEL LEAKS. SOLUTIONS POSTED ARE BELOW: 1) QUOTE FROM MY INVOICE: CONFIRMED FUEL LEAK WAS COMING FROM LINE TO HIGH PRESSURE PUMP. REMOVED LOWER PANEL OF TRANSMISSION TO GAIN ACCESS TO LINES. REMOVED HIGH PRESSURE FUEL PUMP COVERS, REMOVED AND INSTALLED FUEL LINES, AND INSTALLED IN REVERSE ORDER TO CORRECT. RAN ENGINE TO VERIFY NO LARGE FUEL LEAKS. FOUND GOOD AT THIS TIME. 2) HAVE YOUR DEALER REPLACE THE TWO FLEXIBLE FUEL LINES FROM THE FUEL FEED LINE TO THE HIGH PRESSURE FUEL PUMP.THERE IS NO OFFICIAL BULLETIN ON THIS BUT THIS IS THE FIX.

WHEN STARTING THE CAR, IN THE FIRST 20 MINUETS THE CAR HAS A VERY STRONG FUEL ODOR IN THE CABIN CAUSING DIFFICULTY BREATHING AND EYE IRRITATION, I NEED TO LEAVE THE CAR RUNNING FOR 20 MINUTES WITH THE WINDOWS OPEN BEFORE I CAN GET IN AND DRIVE, I WENT TO THE DEALER AND WAS DISMISSED AS IF EVERYTHING IS GOOD, I DON'T KNOW WHAT TO DO NEXT.

TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ E300. WHILE DRIVING 50 MPH, THE VEHICLE LOST POWER AND ALL THE WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS ABLE TO RESTART, BUT THE FAILURE OCCURRED ON SEVERAL OCCASIONS. THE DEALER DIAGNOSED THAT THE FUEL PUMP WAS DEFECTIVE AND NEEDED REPLACEMENT. THE CONTACT WAS UNAWARE IF THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 9,600. THE VIN WAS NOT AVAILABLE.