I can get the advertised 21 mpg on highway, but only if I do not exceed 55 mph. I believe they don't exceed an average of 50 mph on EPA estimates of highway mpg. I really start taking a dump at the pump when I run it over 65 mph. Winter is worse miliage due to the 3.2 doesn't seem to like the winter fuel blends. But overall, from my conversations with other owners, it seems the Isuzu mpg estimates are accurate.

Pete

'01 Rodeo Sport, 5 Speed Softie, Indy 4X rocker bars, OME 912's, Rancho 9000X's, Superwinch hubs, custom tube bumper with Warn 9000i , Flowmaster 50, TeraLow t-case gears, ARB front & rear lockers, TrXus MT's, Sway bar disconnects