I am 17 too and had that problem, used to consistently get 19 mpg, now i get 30 mpg, and i didn't even accelerate that fast but i went fast, i took off about 1/3 of my speed
, it takes me about 5 minutes longer to get to work (30 minutes instead of 25) but it makes me safer, cheaper, better environmental. I used to never get passed, now i get passed all the time. (my travel is on a big state road that is hilly and the average traveling speed is about 55-70, i go about 35-40 on it
, speed limit is 45 so
) Plus i love po people
If you have a standard eoc works good (dont do it in an auto), it is nice for long down hills and flats between hills, it not only saves a bit of gas but it prevents you from continuing driving during that time, so you are not using gas to accelerate. It helps reduce speed temptation.