October 12, 2011 Smart CDI wins the MPG Marathon with a 99.24 mpg rating Edit Delete Tags Autopost The Smart CDI which managed 99.24 mpg (2.85 liters/100 km) over the course of two-days of driving and a total distance of 370.9 miles (597 km). Source: http://feeds.worldcarfans.com/~r/worldcarfans/Jxfz/~3/lcrdKuE81Vs/smart-cdi-wins-the-mpg-marathon-with-a-9924-mpg-ratingJan Magnussen Guy Mairesse Willy Mairesse Nigel Mansell Sergio Mantovani