The Subaru BRZ is rated at up to 28 mpg in the city and 34 mpg on the highway, despite its high-strung sports car personality. That's due in part to its direct-injection fuel system, its tall high-gear overdrive, and its very light curb weight–coming in at only 2,800 pounds.
But even more impressive is that in a first drive of an automatic BRZ, including about 280 miles of varied conditions—none of it steady or sedate—we saw an average 30 mpg.
BRZ models with the automatic transmission are rated a bit higher (25 mpg city, 34 highway) than those with the six-speed manual (22/30)—in part perhaps because the manual is geared a bit lower.
One note for those interested in pinching pennies: The BRZ requires premium fuel.