Euro 5 as of 2020.
As we'll be out of the EU by the end of next year (?), someone should buy up the Vincent name and start making 200 bhp British V-twins with no cats, no baffles, no electronic aids and a legal waiver sticker on the tank: "Warning - this bike is not for gays. If you're a cunt who can't ride you will be killed and it'll be fuck all to do with us. Enjoy". They'd sell loads.