Can anyone tell me how many miles they can get in a full tank of gas for their 2004 Acura TL?

My gas light comes on at about 260. I drove till about 272 today before filling because I got scared (the gas needle dropped drastically) and I was just wondering if anyone else gets higher than that? When I filled up, I only had to fill 13.9 gallons and my tank is suppose to be a 17 gallon tank. Can someone please help me? I'm so confused. Thanks!

17 gallon tank on a Acura? oh ok but you may need to get your tank checked the pipe you put your gas in has a screen you could have stuff on it that is popping the gas nozzle prematurely