Depending on the market you are in, I think the 1 litre auto start stop model comes with an EGR system it’s a valve that lets exhaust gas back into the intake.
It has nothing to do with the evap system you speak of.
yah im aware what is EGR my scooter have that and almost all of the diesel we are dealing here at the shop everyday as of now our emission standard is only based on EURO4, yah its not the same as the evap canister but thats the only recovery we got.