Well if I was to do it right I may be able to get 25-30 MPG outa it. Sure it would add up in the cash colum but as of now im just specilating. so if I could crank up the Jetta engine from 140 to maybe 300hp (this would be the hard part) and still get 20-25MPG 30 if you wana streach it, I'd see that as a nice rig.