Least and Most Polluting Cars, 2013
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: city1 | MPG: hwy.1 | Green2 score |
|---|---|---|---|
| 1. TOYOTA PRIUS C | 53 | 46 | 58 |
| 2. HONDA FIT | 3.9 | 3.1 | 57 |
| 3. TOYOTA PRIUS | 51 | 48 | 55 |
| 4. TOYOTA PRIUS PLUG-IN HYBRID | 51 | 49 | 55 |
| 5. HONDA CIVIC HYBRID | 44 | 44 | 55 |
| 6. HONDA INSIGHT | 41 | 44 | 54 |
| 7. VOLKSWAGEN JETTA HYBRID | 42 | 48 | 53 |
| 8. MERCEDES-BENZ SMART FORTWO CONVERTIBLE / COUPE | 34 | 38 | 53 |
| 9. SCION IQ | 36 | 37 | 53 |
| 10. FORD FOCUS | 3.3 | 2.9 | 52 |
| Meanest vehicles | MPG: city | MPG: hwy. | Green2 score |
|---|---|---|---|
| 1. FORD F-350 FFV | 11 | 16 | 17 |
| 2. FORD F-250 FFV | 11 | 16 | 17 |
| 3. FORD E-350 WAGON | 10 | 13 | 17 |
| 4. CHEVROLET G2500 EXPRESS | 10 | 15 | 18 |
| 5. CHEVROLET SUBURBAN K2500 / GMC K2500 YUKON XL | 10 | 15 | 19 |
| 6. BUGATT VEYRON | 8 | 15 | 19 |
| 7. FORD E-150 WAGON FFV | 12 | 16 | 21 |
| 8. MERCEDES-BENZ G63 AMG | 12 | 14 | 21 |
| 9. BENTLEY MULSANNE | 11 | 18 | 21 |
| 10. MERCEDES-BENZ G550 | 12 | 15 | 22 |
NOTE: MPG = miles per gallon. 1. Fuel economy for electric vehicles is provided in miles per kilowatt-hour. 2. The green score runs on a scale from 0 to 100. The top vehicle this year scored a 58, and the worst gas-guzzler scored 22. 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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