I just filled mine today after 305 miles of mixed driving slightly biased toward highway. It turned out to be 24.6. Usually in just around town driving I get from 19-22 depending on how heavy my foot is. The best I've gotten is 27.5 in hilly highway driving. Oh yeh, V6 ATX, no mods except drop-in K&N. 
'99 Sport TropicGreen,Duratec, SVT exhaust, Brembo rotors, Ceramic pads, K&N filters(oil & air), Alpine CDM7874, Polk DB570 speakers front and rear. Fog light mod. 50% Formula One tint.
| 
