I've reset it after fill up, but usually forget to check it before adding gas in again. Im going to try it today, but its just bothering me that i just put 30 in saturday, then again yesterday (1/2) and already down to 1/4 tank. I thought i found the prob a long time ago, because my fuel line was leaking by the filter, that was only a minor improvement

Quote Originally Posted by dsmuts View Post
do you ever fill your car all the way up then reset the trip then fill it up again when it needs it and figure up your mpg? Thats the only true way to tell.