- On-Road Vehicle and Engine Emission Regulations – Tier 2 – 2004-2016 model years
- Passenger Car and Light Duty Truck GHG Emission Regulations – 2011–2016 model years
- Heavy Duty Vehicle & Engine GHG Emission Regulations – 2014–2018 model years
- Passenger Car and Light Duty Truck GHG Emission Regulations – 2017–2025 model years
- On-Road Vehicle and Engine Emission Regulations – Tier 3 – 2017-2025 model years
- Heavy Duty Vehicle & Engine GHG Emission Regulations – 2019–2027 model years (in development)
While at the same time also meeting increasingly stringent vehicle safety regulations.
Canadians can now purchase the vehicles that are cleanest in the world in terms of criteria air contaminants (smog-related emissions).
Since the mid-1980’s vehicle manufacturers have met increasingly more stringent smog-related emission requirements each year. In 2004, Canada adopted the most stringent national smog-related emissions standards in the world on a harmonized basis with the United States (Tier 2), thereby reducing emissions by 99% from pre-control. Commencing in 2017, even more stringent smog-related standards, the new Tier 3 emissions and fuels regulations will reduce these small remaining emissions by yet another 80% (see Figure 3). These standards are fuel neutral, which means each vehicle must comply with the same smog-related standards regardless of the fuel used. As a result of these previous accomplishments and planned additional actions, the light duty vehicle sector has been the only sector to reduce smog-causing emissions year over year. These virtually zero smog-related emission vehicles will be supported in the market place with ultra-low sulphur gasoline (10 ppm sulphur), both of which contribute significantly to achieving these dramatic vehicle emission reductions.