Other Fuel System Tank Filling/charging problems of the 2008 Mercedes Benz E63

Upon filling up my gas tank there is a strong odor of gasoline. This becomes really bad when parked in my garage. We have 2 small children so want to solve this as soon as possible.

Owned the car for over 1 year, noticed a pronounced smell of gasoline after filling up at a local service station. Thought it was a spill, smell got stronger over the next 10 miles, parked the car in the garage, where the smell continued to increase to the point I could smell it in the bedrooms above the garage. Took car to local mercedes specialist who removed the inspection plates under the rear passenger seats. Driver side revealed a large pooling of gasoline (approx 8 FL oz) around the fuel tank apparatus. Car is not safe to drive, and required $1100 to replace the part.

Reference NHTSA action number: pe12001. I purchased this vehicle used in December 2012. One day after filling up with fuel I parked the car in my garage. The next day I came out to my garage and there was a strong smell of gasoline. When I got inside of my car the smell got much stronger and it was unbearable. I could not find any leaks inside or outside of the vehicle. I had to drive to work and this was the only car available. This was in the dead of winter and I had to drive with the windows down because the gas smell and fumes were unbearable. I had a terrible headache for the rest of the day. I left my car with the windows rolled down to help air it out. When I returned home I did some research online and found out this is a far too common problem with the w211 chassis Mercedes Benz. Per the information online I was instructed to remove my rear passenger seat and check the fuel sending units underneath the seats. Sure enough when I removed the cover off the drivers side fuel sending unit there was a pool of gasoline! I cleaned up all of the gasoline and let it dry out. From this point on I have not filled up my gas tank more than 3/4 just to keep this from happening again. Fuel pooling inside of the cabin is dangerous and unhealthy. Mercedes benz denies that this is a problem and will not cover the cost of replacing/fixing the defective fuel sending units. There are hundreds if not thousands of others that have this issue. Please do something to get this resolved. I have pictures of the fuel pooling inside of the cabin.

A strong fuel smell was noticed in the passenger cabin and outside the car after filling the tank. On 5/10/11, the dealer replaced the driver side sender unit p/n 2114703894 and seal ring p/n 2114710579. On 9/26/12, the same strong fuel smell was noticed in the cabin (again). The dealer replaced the same exact two parts on the driver (left) side. The sender units are accessed from under the back seat, which puts the overwhelming fumes in the cabin. I have read that this is a common problem for the w211 models, which is a very dangerous situation. I am concerned that this will happen again and result in a fire, explosion, or illness from the fumes. My children sit on the back seat that could become soaked with fuel.