It's that time of the year, and the U.S. Environmental Protection Agency (EPA) has once again done its annual fuel tally for vehicles sold in America. Defending its title as 2009's econo king is the Toyota Prius Hybrid, which matched its premier 2008 performance by racking up 48 mpg in the EPA's city cycle and 45 mph in the highway regimen. Hybrids went on to claim five of the top six spots in this year's EPA Hall of Fuel Fame standings. At the other end of the spectrum, the Lamborghini Murcialago with automatic transmission also reprised its somewhat less-laudatory role as the country's thirstiest car, netting only eight mpg around town and 13 mpg out on the open road.

Notable newcomers to the EPA's 2009 Top 10 contingent include the smart fortwo coupe/convertible models that roll in with 33/41 mpg stats as well as Volkswagen's new 50-state Jetta TDI turbodiesel sedans and wagons that boast 30/41 mpg ratings when fitted with a manual transmission and 29/40 mph in automatic form.

2009 EPA Top 10 Mileage Makers

1.   Toyota Prius Hybrid  48/45 mpg
2.   Honda Civic Hybrid  40/45 mpg
3.   Nissan Altima Hybrid  35/33 mpg
4.   Ford Escape Hybrid (2WD)  34/31 mpg
      Mazda Tribute Hybrid (2WD)
      Mercury Mariner Hybrid (2WD)
5.   smart fortwo (coupe/conv)  33/41 mpg
6.   Toyota Camry Hybrid  33/34 mpg
7.   Volkswagen Jetta TDI (manual)  30/41 mpg
8.   Volkswagen Jetta TDI (auto)  29/40 mpg
9.   Toyota Yaris (manual)  29/36 mpg
10. Toyota Yaris (auto)  29/25 mpg

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