dont be so concerned about it. set your climate control to the temp you like and forget about it.also your car is not broken in yet. in addition ive found that a steady speed of about 45 to 65 gives the best results. when i drive down the beatuful natchez trace it get about 60 mpg. when i drive at 70 on long flat stretches i get about 47 mpg. dont do a bunch of crazy save a penny mileage things. just drive it and youll soon know how to get the bst mileage.it is a great car and has engineering way beyond most vehicles