I just purchased a 2003 Insight CVT with 220,000 miles. I am only getting 43-45 MPG. I am aware that the CVT model gets worse fuel economy, but not THIS bad. The CVT fluid hasn't been changed in 100k+ miles, so I am doing that this weekend. I am also getting new tires (potenzas) soon too. I a hoping that this will bring it up to at least 50 MPG. Any suggestions? Thanks!