I get between 18 and 22 around town. It's totally city driving though...all stop and go and much of the time idling in traffic. On the highway I've gotten as high as 32 and recently on a trip I got 28 moving with traffic at 80-85mph most of the way.

-Dan
1998.5 SVT "Black and Blue" #5292
See here for MOD list.
"Washing your car to make it rain does not work."