I was in exactly the same scenario as you with my 2012 auto. I drive about 100-125 miles a day and gas economy is always a top priority. However, you won't be able to get 40 mpg from that trans. I drove about 3/4 highway with very little traffic and I usually got 34-36 mpg with a VERY efficient driving style.I have an 2012 sel 6speed auto. My question is how do or can I get 40+ mpg from my focus. Car has 160k on her. My new job im driving over 100 mile aday to work. Car is 100% stock. Any info to help reach my goal would be great.