The EPA rated the 2006 cars based on air pollution, greenhouse gas and fuel economy. With an air pollution score of 9.5, a greenhouse gas score of 10 and a city/highway of 60/51, the Toyota Prius came out on top. The Honda Civic hybrid comes in a close second with the same scores, but a lower fuel economy of 49/51. The Ford Escape Hybrid comes in third with 36/31, an air pollution score of 9.5 and greenhouse gas score of 8.
|Model||Air Pollution Score||Greenhouse Gas Score||Fuel Economy|
|Honda Civic Hybrid||9.5||10||49/51|
|Ford Escape Hybrid 2WD||9.5||8||36/31|
|Ford Escape Hybrid 4WD||9.5||8||33/29|
|Mercury Mariner Hybrid||9.5||8||33/29|
|Mazda Tribute Hybrid||9.5||8||33/29|
The air pollution rating is based on tailpipe pollutants that cause smog and health problems. 10 is cleanest. Greenhouse rating based on emissions of the greenhouse gas CO2. 10 is best.
Information from the EPA Green Vehicle Guide.