The tank normally gets about 12.5-13 gallons if it isn't totally out so I gotta assume it's the 13gal.

Sure running a car out of gas can be bad... sediment in the tank (but that's what filters are for)... and some arguments about overheating the fuel pump.

I myself don't agree about the overheating fuel pump argument, it just isn't logical... if a fuel pump overheats every time the tank gets under a certain amout of gas then we'd see fuel pumps going out all over the place. BUt hey this isn't the place to argue that.

06 HCH's have better milage off the bat, and being able to go 53-55 on flat roads for the entire 700 miles I"m sure I could average 58-62mpg easily. But this was mixed driving in "real life" situations (it's not often people are able to drive 700 miles on flat roads basically without stopping). It's also with 2 kids, a wife and trunk full of baseball equipment (he's a catcher, all the gear, 12 baseballs, 3 bats, and 3 gloves) and a stroller.