Red Haired Girl Posing With The Motorbike

Europe
European emission standards for motorcycles are similar to those for cars. New motorcycles must meet Euro III standards, while cars must meet Euro V standards. Therefore, the difference in total pollution between motorcycles and cars that pass European emission standards would be small, certainly much smaller than the 10X factor claimed by the referenced LA Times article. Motorcycle emissions controls are being updated and it has been proposed to update to Euro IV in 2012 and Euro V in 2015.