Do you have any material to back this statement up? I don't want to get into an argument over new 2-stroke technology, and I am certainly lacking at knowing what 2 stroke motors go into a scooter these days, but for the most part MODERN 2-stroke engines get a bad rap. They are no longer the smoky polluting motors they used to be. They are making them that are "cleaner" and more efficient than 4 strokes now, but because they have this rap sheet nobody will buy them. I have them in all my jetski's, and I can have them rebuilt (do it myself) for under $200, do that in a 4 stroke if something blows up. I am willing to bet that new little 4 stroke that Yamaha is putting in the Zuma is as clean as they are in their motorcycles. I just hate hearing people bash scooters and 2 strokes when technology has come a LOOOONG way. Here is one article if people are interested. I could find more, but don't feel like wasting my time.

http://findarticles.com/p/articles/m...5/ai_103990207