Using air pollution and greenhouse gas emissions data from the Environmental Protections Agency, Forbes magazine has ranked the top 10 dirtiest vehicles on the road.
America’s Dirtiest Vehicles (followed by air pollution/greenhouse gas scores)
1. Jeep Grand Cherokee (3/1)
2. BMW M5 (6/0)
3. BMW M6 (6/0)
4. Chevrolet TrailBlazer (6/0)
5. Mercedes-Benz CL600 (6/0)
6. Mercedes-Benz S600 (6/0)
7. Chrysler Aspen (6/1)
8. Dodge Dakota (6/1)
9. Dodge Ram 1500 (6/1)
10. Dodge Durango (6/1)
According to Cars.com