An engine displacing just 150 cubic centimeters is bound to be pretty fuel efficient, right? Still, improvements can always be found in the good old internal combustion engine, and we have to hand it to classic Italian scooter maker Vespa for finding a way to squeeze a but more mileage from its single cylinder, four-stroke mill.
Vespa's new Eco-Smart fuel injected engine will be standard in the company's 2011 S, LX and LXV 150 models, using 15 percent less fuel than the 2010 editions. In addition to providing 85 miles per gallon, Vespa says that its new powerplant offers a smoother powerband for stop-and-go riding. Fortunately, the increase in efficiency hasn't had an adverse effect on performance. Vespa's 2011 150cc models can each hit a top speed of about 60 miles per hour, just like before. Hit the jump for the complete press release.