Damn! Glad I drive a diesel (which will keep most of the petrol engine models honest with performance anyway). Manual calculation on mine - I get around 28.5/mpg on the town cycle. Regularly get 34mpg on the highway cycle.

Edit: this translates to a regular 600 miles on the "town" cycle.

I would certainly be starting with air filter. What is the situation with MAF sensors in these things? Can they be cleaned safely?

Another thing to check is the grade of oil its running. The thicker the oil, the worse the economy (generally).

__________________
Cheers,

Anthony