One problem related to other fuel system tank filling/charging has been reported for the 2010 Mercedes Benz E63. The most recently reported issues are listed below.
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.