Fuel smell in cabin from rear fuel pump. This is an issue that other people with the W212 have been having as well according to mbworld.org forums. I am frightened that one spark may cause my vehicle to explode, I also cannot allow my 5 year old son to rise in the vehicle because I do not want him to breathe the fuel fumes. Vehicle is currently in possession of dealer but it sounds like they do not want to do a goodwill repair for it. They are charging for inspection when it is not my fault in the first place.

- Chino Hills, CA, USA

Have strong odor of fuel in cabin and outside driver's side rear of vehicle that has been increasing in intensity over the past couple of months. I removed the rear seat bench and the access cover for the fuel pump under the driver's side rear seat and found pooled fuel on top of the pump as well as a lot of dirt and grime showing that it had been a problem for some period of time. I dried up the fuel but the problem continues, and continues whether or not the tank is full or less than 1/2 full.

- Baton Rouge, LA, USA

There is a fuel smell coming from the rear of the car. I remove the rear seat and verified the fuel sending unit is leaking. There was puddle of gas around the sending unit. Especially after filling the gas tank with fuel, the smell is much stronger. Other people have passed by my car while it is parked and have told me they small gas. I had the car serviced at Mercedes of gilbert in Arizona. They verified the fuel sending unit on the driver's side is leaking gas. They want something like $1,350 for the repairs. My previous car was a 2004 Mercedes E55 amg. This car after thousands of complaints and NHTSA starting their investigation, had the same leaky fuel sending unit. Mercedes denied there was a problem and refused to fix it. Only after the NHTSA started their investigation did Mercedes admit there was a problem and fixed the cars under an extended warranty. I believe that was in 2014. My current car is basically the same as my previous car. Mercedes did not fix the problem until 2014 which is 4 years after my car was put into service. Since it is pretty much the same car as previous versions, it does not surprise me that it has the same leaky fuel sending unit issue. My car was already on the road when Mercedes decided to fix this problem. Since my car had been on the road for 4 years before the fix was available it makes sense that my car was going to have the same issue. In the repair estimate(see attached) Mercedes even says it is a safety hazard.

- Chandler, AZ, USA