1. Lamborghini L-147/148 Murcielago (automatic) 9/14 mpg

2. Bentley Arnage LWB 10/15 mpg

3. Lamborghini L-147/148 Murcielago (manual) 10/16 mpg

4. Ferrari 612 Scaglietti (automatic) 10/17 mpg

5. Ferrari 599 GTB 11/15 mpg

6. Bentley Azure 11/16, Bentley Arnage 11/16 mpg

7. Lamborghini Gallardo Spyder 11/17 mpg, Ferrari 612 Scaglietti (manual) 11/17 mpg

8. Aston Martin DB9 Coupe, DB9 Volante (manual) 11/18 mpg, Bentley Continental Flying Spur 11/18 mpg, Bentley Continental GTC 11/18 mpg

9. Jeep Grande Cherokee 4WD 12/15 mpg

10. Mercedes-Benz ML63 AMG 12/16 mpg, Mercedes-Benz R63 AMG 12/16 mpg

Source: EPA