I am considering 3 cars for my next car . A 98 Honda Prelude , 99 Mustang GT and a 94-96 BMW 325is or 328 if I can find one . I am concerened about gas milleage since here in BC canada gas prices are equal to nearly $4.00 a gallon . So how many Miles to you get for you tank ? Please include any major modification that would affect it , and perhaps say if you drive mostly city or highway . Thank You . I hope the BMW does good , I really don't want to drive a Honda .!