2006 Pontiac G6 fuel system problems

The fuel gauge in my 2006 pontiac g6 does not accurately register the amount of fuel in the vehicle once the gauge reaches the fourth of a tank mark. The was one incident when the vehicle registered empty when my car was full of gas. The dealership has made 3 attempts to fix this problem. To date the vehicle is still giving a false reading with the fuel gauge when it reaches one fourth of a tank. The gauge moves sporadically from 1/4 to 1/8 to empty, and back to 1/4 and so on.

I purchased my car in 2016. When I fill it up with gas there is a very strong gas odor that lasts for days. If you walk anywhere near the car, even if it has been sitting you smell a strong gas odor. I park in my driveway and there is a big stain where gas has leaked. I have chatted with people with the same problem for this year of car and was told there were no recalls for this year. I was told it is a very dangerous situation and could result in fire.