Least and Most Polluting Cars, 2010
Updated February 21, 2017 | Factmonster Staff 
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. Honda Civic GX | 24 | 36 | 57 |
| 2. Toyota Prius | 51 | 48 | 52 |
| 3. Honda Civic Hybrid | 40 | 45 | 51 |
| 4. Smart For Two Convertible/Coupe | 33 | 41 | 50 |
| 5. Honda Insight | 40 | 43 | 50 |
| 6. Ford Fusion Hybrid/Mercury Milan Hybrid | 41 | 36 | 47 |
| 7. Toyota Yaris | 29 | 36 | 46 |
| 8. Nissan Altima Hybrid | 35 | 33 | 46 |
| 9. Mini Cooper | 28 | 37 | 45 |
| 10. Chevrolet Cobalt XFE/Pontiac G5 XFE | 25 | 37 | 45 |
| Meanest vehicles | MPG: city | MPG: hwy. | Green1 score |
|---|---|---|---|
| 1. Lamborghini Murcielago | 18 | 13 | 18 |
| 2. Bugatti Veyron | 8 | 14 | 18 |
| 3. Bentley Azure/Brooklands | 9 | 15 | 18 |
| 4. Maybach 57S | 10 | 16 | 19 |
| 5. Dodge Ram 2500 Mega Cab | 12 | 17 | 20 |
| 6. Ford F-250 | 12 | 17 | 20 |
| 7. Bentley Continental | 10 | 17 | 20 |
| 8. Ferrari 612 Scaglietti | 9 | 16 | 20 |
| 9. Mercedes-Benz ML 63 AMG | 11 | 15 | 20 |
| 10. Chevrolet Suburban K2500 | 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).
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