Question came up as a friend want to buy a used Yamaha Scooter from 1999.

I read from euphonius that his bike Jialing 600 has an 强制报废期止 - mandatory scrapping deadline of 11 years.
Checked my bike has 13 years, a XY250-GY2 - registered in Yunnan/Kunming in 2010.

Anybody any idea why is it different, by model, city, year of registration...What do you guys got? Lets see if we can make somethin out of it to understand the local setting better...here is for an starter:

13 years - Shineray XY250-GY2; Registration 05/2010; Kunming/Yunnan