I don't know why ur afraid of an abused sti. It's the same thing as an abused wrx. Things like mpg and other stuff are irrelevant. I can tell you now that I get 15 ish mpg average with city and highway. My friends stock sti still gets better mpg. I'm saying find yourself with a limit. Stage 2 wrx or else you will have a wrx with sti guts in and out like me. It's cool but much work.