"Current standard: Euro 3, Directive 2002/51/EC
Future standards: Regulation (EU) No 168/2013: Euro 4 emission standards for motorbikes from 2016 and mopeds from 2017; Euro 5 standards for all two- or three-wheel vehicles from 2020." (http://transportpolicy.net/index.php?title=EU:_Motorcycles:_Emissions)