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Least and Most Polluting Cars, 2009

The ACEEE's Green Book®, a buyer's guide to environmentally friendly passenger vehicles, rates cars according to their emissions and fuel consumption, and publishes an annual list of the "greenest" and "meanest" (i.e., most polluting).

Greenest vehicles MPG:
city
MPG:
hwy.
Green1
score
1. Toyota Prius 48 45 53
2. Honda Civic Hybrid 40 45 51
3. Toyota Yaris 29 35 46
4. Honda Fit 28 35 45
5. Ford Escape Hybrid 34 31 42
6. Hyundai Sonata 22 32 39
7. Subaru Outback Wagon 20 26 37
8. Nissan Rogue 22 27 37
9. Toyota Tacoma 19 25 34
10. Ford Ranger 19 24 33
Meanest vehicles MPG:
city
MPG:
hwy.
Green1
score
1. Hummer H2 FFV 11 18 16
2. Lamborghini Murcielago 8 13 17
3. GMC Yukon 2500 13 19 18
4. Mercedes-Benz G55 10 26 19
5. Maybach 57S 10 26 19
6. Lincoln Navigator FFV 14 19 19
7. GMC Sierra K2500 13 19 19
8. Mercedes-Benz ML63 AMG 10 14 20
9. Jeep Grand Cherokee 11 14 20
10. Dodge Ram 2500 Mega Cab 13 18 20
NOTE: MPG = miles per gallon. 1. The green score runs on a scale from 0 to 100. The top vehicle this year scored a 57, and the worst gas-guzzler scored 14. The score is based on automakers' test results for fuel economy and emissions as reported to the EPA, as well as an estimate of pollution from vehicle manufacturing, from the production and distribution of fuel, and from vehicle tailpipes. It also factors in air pollution. Source: Web: American Council for an Energy-Efficient Economy (ACEEE).

Most Expensive Cars, 2007 Transportation Least and Most Polluting Cars, 2007