http://www.honda.co.jp/motor-lineup/category/#anchor5"Honda's Japan website is boasting the Grom gets 63.2 Km/l. That equates to 148.66 mpg or 178.53 mpg Imperial gallon. Wait for it, wait for it....
It also says driving at a constant 60 Km/h or 38 mph. "
They say the Swing gets 30km/L. Mine gets about 42 mpg while others claim 50. So it looks more like about 100 mpg, not 130. Hey, that is a 30% difference.... but still, nice commuter mpg.