The American Council for an Energy-Efficient Economy, a Washington-based nonprofit group financed by foundations, electric utilities, and some federal agencies has released its list of the 12 greenest vehicles sold in the US in 2008 as well as the 12 "meanest" (meaning least environmentally friendly) vehicles.
The organization's methodology (available
here) claims to consider fuel economy, pollution emissions, CO2 (which is really a proxy for fuel consumption, since consuming fuel releases CO2, no matter how sophisticated emission controls are), vehicle weight, and even its cradle-to-grave environmental impact. On that last point, I found it the #2 green choice on the list below to be surprising, since the widely-criticized CNW Marketing Research report accused the Prius of having a larger overall environmental footprint than some Hummer models.
The list of the top 12 greenest vehicles sold in the US are:
1. Honda Civic GX [powered by natural gas]
2. Toyota Prius
3. Honda Civic Hybrid
4. Smart ForTwo Convertible/Coupe
5. Toyota Yaris
6. Nissan Altima Hybrid
7. Toyota Corolla
8. Mini Cooper/Clubman
9. Ford Focus
10. Toyota Camry Hybrid
11. Honda Civic
12. Honda Fit
The 12 "meanest" vehicles for 2008 are:
1. Volkswagen Touareg V10 TDI
2. Bugatti Veyron V16
3. Mercedes-Benz GL320 CDI
4. Jeep Grand Cherokee Diesel
5. Mercedes-Benz R320 CDI
6. Lamborghini Murcielago/Murcielago Roadster V12
7. Mercedes-Benz ML320 CDI
8. Mercedes-Benz G55 AMG
9. Hummer H2
10. GMC Yukon 2500 6.0L
11. Bentley Azure V8
12. Bentley Arnage V8