I found this to be interesting.I check my gas mileage at every fill up,and with spirited driving on mainly round trips back and forth to work of 54 miles I almost always get 20mpg.I also have an 88 model 5.0 and under the same driving conditions,you guessed it;20mpg!My 1994 and 1995 Cobras,20mpg.The only two Mustangs I haved owned that where worse my 1996 Cobra Convertible (18) and my 1995 Saleen S351 (14mpg). What kind of mileage are you all getting?