So I am a recent new owner of a F56 MCS 5-door. I previously owned a 12 MCS 2 door. I find that the gas mileage on the 2012 is better for some reason. I noticed that the r56 mileage is better by at least 150 km's per tank(I'm in Canada). Now I also on my new MCS had the motor replaced for a recall so could the difference in mileage be a result of this new motor change?? I noticed that when I fill up that my cost per tank is about 20$ less then the r56. I m just curious if any other fellow owners have had this issue.