I traded off my Adly/Lambretta DUE50cc 2 Stroke for a bigger scooter...and I am very glad I did. The Adly Thunder 150cc has good acceleration and a decent top speed...about 65mph (I weight 230#). Midrange, which is what helps you negotiate city traffic is there immediately...it just thumps out mph in a steady and strong fashion. As for mpg...I have only riden about 400 miles and most of that was at 50-65 in hilly/windy conditions with a group of 12 bikes (250cc-400cc)... I recorded 59mpg for the two hundred mile ride. I think in toen you could easily get 65-70+mpg. The Michelin Pilot City 12\