Top 10 Worst Vehicles for the Environment

6. Rolls-Royce Phantom Drophead Coupe

Rolls-Royce may be known for high-class motoring, but according to GreenerCars.org, it should also be known for being mean to the environment. The Phantom Drophead coupe is powered by a 6.7-liter V12 engine that results in a combined fuel economy rating of 14 mpg, and a green score of 23.