IMO, there's no telling because of a lot of other factors... the way one rides, riding conditions, weight of rider/riders., etc., contribute in one way or another... my old chinesescoot had 55,000 miles before I parted with it.... the present owner still uses it and has undergone no repairs yet... I used it for city riding only.. it has around 70,ooo miles now.... the first repair I made was a broken speedo cable... and that's a chinese scoot... My Super 8 blew a fuse one week after I got it...