10. Infiniti G37 Coupe - Carbon Footprint: 9.2 annual tons
9. (tie) Mercedes-Benz C300 - Carbon Footprint: 8.7 annual tons
9. (tie) BMW 528i - Carbon Footprint: 8.7 annual tons
8. (tie) Volvo S60 - Carbon Footprint: 8.3 annual tons
8. (tie) Lincoln MKZ - Carbon Footprint: 8.3 annual tons
8. (tie) Lexus ES 350/GS 350 - Carbon Footprint: 8.3 annual tons
8. (tie) BMW 128i; BMW 328i; BMW Z4 3.0si - Carbon Footprint: 8.3 annual tons
7. (tie) Volvo C30 T5 - Carbon Footprint: 8.0 annual tons
7. (tie) Volvo S40 2.4i/V50 2.4i - Carbon Footprint: 8.0 annual tons
7. (tie) Porsche Boxster/Cayman - Carbon Footprint: 8.0 annual tons
6. (tie) Lexus IS 250 - Carbon Footprint: 7.7 annual tons
6. (tie) Audi A4 2.0T - Carbon Footprint: 7.7 annual tons
5. Audi A3 - Carbon Footprint: 7.3 annual tons
4. Audi TT - Carbon Footprint: 7.1 annual tons
3. Lexus LS 600h L - Carbon Footprint: 8.7 annual tons
2. Lexus GS 450h - Carbon Footprint: 8.0 annual tons
1. Lexus RX 400h - Carbon Footprint: 7.3 annual tons


http://www.egmcartech.com/2008/03/25...ute-the-least/