78.4 mpg 4 seater
 

The Audi A2 TDI 1.2 liter gets 78.4 mpg or 2.99 liters/100km

http://www.audiworld.com/news/99/a2_2/content.shtml

maybe once USA gets its sulfur down or eliminated these will hit the US
streets.

I bet that little car on bio would be mucho clean.

even the 1.4 liter which is 300 lbs heavier and has a larger motor get 56 mpg or 4.2 liters/100km

Car has been out since 2000 too bad none are here