Is My Average MPG Guage Off or Something Else?
most of you know that i have been trying to improve my MPG with different methods the last couple of months.
i was averaging around 36 mpg (my calculations) along with my average MPG on my car. ( there would maybe be only a .5 MPG differance) pretty regularly but here lately its been a mile or two lower. i know, its not that big of a deal. well what i am concerned about is, i drive a strait shot highway road every day to work and hold my car at 55 98% of the time and coast my car as much as possible and my average MPG meter slowly goes up and it usually peeks at about 37 mpg and almost never drops more than maybe .3 on a daily bases. it will stay roughly around 37 on my average MPG untill im out of gas then i go and fill my car up with gas and do the math and with my calculations it says i am only getting between 34-35. i stop filling the car on the first pump shut off, i do not over fill it.
is there a reason my average MPG and my calculations are so far off? again, its only off about 2.5 MPG but why does my car say i should be getting more? i am going to try to change my air filter and see if that helps.
in a side note, with going 55 and coasting my car every day shouldnt my MPG be over 35 anyway? if i run 60 and dont coast my car i can usually run around the low 34's. it dont really add up there for me, you would think running slower and coasting would make the MPG a decent amount more. if im only going to gain roughly 1 more mpg with going 55 and coasting then IMO i dont think its really worth it. i literally take my time getting up to speed too, rather than just speeding off.
any opinions are welcome.
BTW, i know i might be taking this MPG too far but im hooked lol
Last edited by bean2080; 03-24-2012 at 09:50 PM.