[Respectful Revolution]

Besides the fact of having read and heard repeatedly that twins are more efficient than 4 cylinder bikes, I can say from my own experience that Harley twins are the most efficient ones in their category (and I've been riding my whole life many different types of twins). I'm currently riding a Harley Sportster 883C modified for long distance and so long as I am on the road, riding to save gas (60 top speed, slow start, no gas to red lights...), I get anywhere between 56 and 62 mpg depending on conditions. I get 2/3 as much efficiency in town with stop and go traffic. EFI likes long haul rides to give maximum efficiency. If I was riding primarily in town, I think an older carburated Sportster would perform better than the injected one. Anyway, yes, I am NOT a Harley fanatic but I sure believe in the efficiency of my Sportster, again, properly handled.