Other Fuel System Tank Mounting problems of the 2008 Audi A4

I had just put $35 in gassed the car still said I needed gas and that I had zero miles left of gas I made a trip that was about 45 miles in distance. My car was then parked and turned off for about 3 to 4 hours then it had trouble starting at first but turned on and I proceeded onto the freeway which was across the street from the parking lot I parked inside of. It was about 9:00 pm and thankfully there was not a lot of cars out. The entrance of this freeway consist of one medium sized steep hill which remains traveling upward onto a mountain when my car suddenly shut off my 3 year old daughter and I were in the car and thankfully we were on the last lane due to the fact that we were barely entering the freeway. I parked on the right side skirt I had just replaced that battery earlier that week (no more than 5 day before). I had a small gas can in my trunk and had someone go to the gas station and bring me the gallon of gas which I emptied into my car and it turned on. At times the car does smell like gasoline especially if I just put gas. It doesn't matter how much gas I fill up my tank with it will indicate I have 0 miles of gas in the screen and the fuel gauge will not go below the middle indicator and will never show above 3/4 full. My tpmsa is always indicating a problem when the I have a mechanic see it and he assured me it's in good condition.