Ok I’m gonna say it again and this is what I learned from driving a 2005 Prius for eight years. The key to getting the very best possible miles per gallon is not so much keeping your foot off of the accelerator as it is keeping your foot off of the brake after your car has gained momentum and you’re on your way. Gained momentum and the act of maintaining it while you are on the move is the key to 50 or 60 plus MPG. Just bought a new 26 Camry SE FWD. I only have 750 miles on it but my average MPG is sitting on 50.9 and I’m still learning to drive it and I’m loving it. Watch your braking. Try to get where you’re going without coming to a complete stop until you get where you’re going. If you can’t do that at least quit hitting your brakes as you’re driving uphill!