I'm anxious to see what I can get with the BRZ. My S4 is rated at 18-27mpg. I averaged 30.1mpg both ways on a recent 80mi. trip; on shorter trips I can get about 25mpg avg. My long-term average over 8,100 miles is 22.1mpg, 1.1mpg better than the EPA states.
However when I can't keep my foot out of the supercharger I'm hovering around 20mpg
Not bad for 330awhp, though!
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Current: 2005 Porsche 911 Carrera S 6MT
Previous: 2 BRZ's, 997 C2S, C5 RS6, C4 S6, B8 S4, GDB STi, S30 240Z, FC3S RX-7 TII, AW11/SW20 MR2, E30 318is/325i, etc.