This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union.

This Regulation shall apply from 1 January 2017, with the exception of Article 61, which shall apply from 6 October 2016.

From 6 October 2016, approval authorities shall not refuse to grant EU type-approval for a new engine type or engine family nor prohibit its placing on the market where that engine type or engine family complies with Chapters II, III, IV and VIII and the delegated and implementing acts adopted pursuant to this Regulation.