The "Greenest" Cars

The top twelve Greenest Cars. (More info at the CNN article)

ACEEE's "Green Score" is based on tailpipe emissions as well as pollution created in manufacturing the vehicle. Pollution from manufacturing is estimated based on the vehicle's weight. The average vehicle's "Green Score" is 30.

Honda Civic GX (uses natural gas)
Green score: 57

Toyota Prius (Hybrid)
City mpg: 60
Highway mpg: 51
Green score: 53

Honda Civic Hybrid
City mpg: 49
Highway mpg: 51
Green score: 53

Nissan Altima Hybrid
City mpg: 42
Highway mpg: 36
Green score: 48

Toyota Yaris
City mpg: 34
Highway mpg: 40
Green score: 47

Toyota Corolla
City mpg: 32
Highway mpg: 41
Green score: 46

Toyota Camry Hybrid
City mpg: 40
Highway mpg: 38
Green score: 46

Honda Fit
City mpg: 33
Highway mpg: 38
Green score: 45

Kia Rio
City mpg: 32
Highway mpg: 35
Green score: 45

Hyundai Accent
City mpg: 32
Highway mpg: 35
Green score: 45

Hyundai Elantra
City mpg: 28
Highway mpg: 36
Green score: 45

Honda Civic
City mpg: 30
Highway mpg: 40
Green score: 44

__________________Also a few more in selected categories:

Small SUV - 
Ford Escape Hybrid
Green score: 43

Sports car - 
Mazda MX-5 Miata
Green score: 39

Mid-size SUV - 
Toyota Highlander Hybrid
Green score: 39

Minivan - 
Toyota Sienna
Green score: 32

Small pick-up - 
Toyota Tacoma
Green score: 34