In Reply to: Is 17mpg OK? posted by Artem Grigoryev on January 30, 2001 at 09:04:31:
is the car displaying any other odd drivability problems? using oil, hesitation, etc?
it is possible that you have a burnt intake valve. my e34 m5 was getting about 21mpg on the highway when i got it. then at the worst it was getting about 16mpg. i had to change the timing cover gaskets and in doing so also changed the valve guide seals. i pulled the head to make life easier and guess what... no1 cylinder intake valve no1 was gone... the keeper guides were gone... just a thought, may not be that bad for you, but this is worst case senerio.