My old 325i (4-door) gave a consistant 25 combined mpg for the trips that I make. I managed to slam the car into the side of somebody making an illegal left turn, and replaced it with a convertable of the same year, 1994. The convertable only gives about 22.5 mpg for the same trips that the other car produced 25.
Can there be something that isn't set up right on the "new" car that can be fixed, or does driving around with the top down cost 2.5 mpg? I wouldn't have thought the top down would be so expensive, but if it is, then I'll learn to adjust. I just wanted to know if something like plugs can use so much gas.
Also, is my convertable a 325iC or 325Ci. I'm thinking it's an iC because the coupe is an iS, and the sedan is just an i.