I did some checking today because I was curious. Seems like real world gas mileage for the US version smart car is about 36 MPG. The car LOOKS like it should get 50MPG though. My 1984 Honda CRX got that kind of mileage. What gets me, is some of the cars from the early 1990's, like the Geo metro, and the Honda Civic VX , got terrific mileage. Why are cars with nearly 15 years more technology getting less mileage? Maybe the weight of 8 air bags and all the other crap they are forced to stick in them to meet current regulations? Or just too many unneeded extra things, electric and computerized everything.
The Civic VX was up there in Hybrid territory-about 50 MPG,and it had good power and a very quiet solid and sporty ride. I tried to find one a couple of years ago, but they all either had 200,000 miles plus on them now, or teenagers had thrown away the original engine and wheels and put a racier motor in them. I would buy a new 1995 Honda Civic VX now if they would bring the exact car back. Read this owner review:he averaged 55 to 57mPG!!!
http://www.carsurvey.org/review_81422.html