"#1 Fill your gas tank first, reset the tripometer. #2 Drive till it is almost empty. #3 Fill the tank. #4 Divide the gallons filled by the miles driven and you get your MPG. Impossible to do this by judging 1/4 tank." ~ Quote from Mark V Technically, this shouldn't matter *too* much. Yes, you'll get a much more accurate MPG rating this way, but if all he's getting is 36 miles out of a 1/4 tank (this is what, 3 gallons?)... something has definitely gone terribly, terribly wrong. I agree with John; replace your O2 sensor. Then check your braking systems, etc etc. Look under your car; are you sure you don't have a fuel leak somewhere? Then make sure your fuel-sending unit = A-OK. A false reading from the gauge could "emulate" other problems. Just my $0.02. Regards, William F. [Non-text portions of this message have been removed] To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/