The Top Ten: Least Polluting Cars, 2006

Updated August 5, 2020 | Infoplease Staff
The Top Ten December 10 - 17

Least Polluting Cars, 2006

Rank Car Model MPG, City MPG, Highway Green Score
1. Honda Insight 57 56 57
2. Honda Civic GX 30 34 57
3. Toyota Prius 60 51 55
4. Honda Civic Hybrid 49 51 53
5. Toyota Corolla 32 41 46
6. Hyundai Accent 32 35 45
7. Kia Rio/Rio 5 32 35 45
8. Honda Civic 30 40 44
Mazda 3 28 35 44
Pontiac Vibe/Toyota Matrix 30 36 44
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 12. 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.

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