(0 is worst, 10 is best) is the measure of a vehicle's improvement in global warming pollution over its closest conventional counterpart, along with its smog-forming emissions performance.
(Very low to very high) is the environmental "bang for your buck." It measures how cost effectively a particular hybrid achieves its environmental performance.
(None to $$$$$) is a measure of how many "premium" or "upgraded" features are included on a hybrid as standard equipment but are not included on the base-model conventional counterpart. Forced features artificially drive up the price of hybrids.
Read more about the rankings
Hybrid ; Environmental score ; Hybrid value ; Forced features
Toyota Prius; 9.8; Very high; $$
Honda Civic Hybrid; 7.8; High; $$$
Mercury Milan Hybrid; 7.8; Medium; $$$
Ford Fusion Hybrid; 7.8; High; $$$
Lexus HS250h; 7.6; Very high; $
Lexus RX450h AWD; 7.6; High; $
Lexus RX450h FWD; 7.4; Medium; $
Ford Escape Hybrid FWD; 7.4; Medium; $$
Mazda Tribute Hybrid FWD; 7.4; Medium; $$
Mercury Mariner FWD; 7.4; Medium; $
Toyota Camry Hybrid; 7.1; High; $$
Toyota Highlander Hybrid; 7.0; Medium; $
Ford Escape Hybrid 4WD; 6.9; Low; $$
Mazda Tribute Hybrid 4WD; 6.9; Low; $$