You know fuel prices are getting high when topspeed.com realizes that the UK/Euro spec Aveo (Sonic) has several efficient gas & diesel options that are rated in the 60's to 80's mpg (imperial gallons) and wishes they were available in the States.

In the U.S., the highest mpg available on the Sonic is 40 mpg and that is the optional 1.4-liter turbocharged engine. In the U.K., the Aveo has several four-cylinder engine options, including a 1.2-liter gasoline, 1.3-liter diesel, 1.3-liter Eco Diesel, and a 1.4-liter. The highway fuel economy on these engines is 68.9 mpg, 83.1 mpg, 85.6 mpg, and 62.7 mpg, respectively.

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Seemingly every car company has a super-Eco diesel engine in its European lineup, but we have yet to see one in the U.S. We think the time has come for one to show up.
2012 Chevy Aveo gets extreme MPG, but what about the U.S.? - Top Speed