Tank Filler Pipe And Cap problems of the 2005 Mercedes Benz E55

I smell strong gas odor at rear driver side, when I get the full tank of gas. I went to a shop and lift the car that I can see the gas leak around the tank. I just want to say this kind of leaking very dangerous, because under the tank is exhaust pipe. That would be fired when too much gas leaking and no mil light come on. Also no any recall for the problem when I call to ask the mb dealer.

Whenever I fill the gas tank strong smell of gas in the cabin of the car. I removed the rear seat to find the insulation barrier soaked in gas and inside the maintenance panel where the fuel filter assy. On the lh side of the car, just beneath the lh passenger seat cushion, had a puddle of gas still present.