These vehicles have the highest "Green Scores" of all, according to the ACEEE.
Honda Civic GX (57)
Toyota Prius (53)
Honda Civic Hybrid (51)
Smart ForTwo (49)
Toyota Yaris (46)
Nissan Altima Hybrid (46)
MINI Cooper (45)
Chevrolet Cobalt (XFE) (45)
Pontiac G5 (XFE) (45)
Honda Fit (45)
Chevrolet Aveo (44)
Toyota Camry Hybrid (44)
Last updated February 03 2009: 1:00 PM ET