EURO 5 EXPLAINED
AUSTRALIA has had vehicle exhaust emissions standards, which have progressively become tighter, since the early 1970s. For the past 20 years – initially for heavy transport vehicles and then from 2003 for all vehicles – Australia has attempted to line up with standards developed by the United Nations Economic Commission for Europe, the so-called Euro standards. Euro 5, the standard currently in play, is also known as Australian Design Rule (ADR) 79/03.
Euro 5 came into effect for new-design ‘Light Petrol and Diesel’ vehicles in November 2013 and applies to all such vehicles (even existing designs) from November 2016. Light vehicles are defined as anything less than 3.5-tonne GVM, so that takes in pretty much everything that’s a recreational 4x4. Different standards apply to diesel and petrol engines, and to heavy vehicles.