i get anywhere from 16 to 19 on my 2v. it all depends on how i drive. but spirited driving in a busier city got me about 16. careful conscious driving only tapping the gas and coasting everywhere i can i think got me about 19. highest was like 27 on the highway averaging about 70mph, again, careful with the throttle. usual mix tends to be 24mpg for normal city/highway mix driving. Supposedly, my friends tuned 3v averages 17 city driving aggressively. he also lives in a less populated city than i do.
2002 GT 5sp. 16x,xxx miles
Steeda Exhaust, C&L plenum, BBK Throttle Body, Steeda Underdrive, Steeda short throw, unknown stage clutch. Rear main leak. Compressor seal leak. Steeda lower control arms. good tires.