Align Vehicle and Engine Emission Rules

Summary#

These are proposed changes called Regulations Amending Certain Regulations Made Under the Canadian Environmental Protection Act, 1999. They would update several Canadian vehicle- and engine-emission rules to stay aligned with recent technical amendments made by the U.S. EPA. The notice was published on December 18, 2021 and is a proposal (not yet law); there is a 75‑day comment period after publication.

What it does#

• Aligns Canadian rules with recent U.S. technical fixes so the same test procedures and references are used where possible. This mainly affects:
  • Heavy-duty Vehicle and Engine Greenhouse Gas Emission Regulations
  • On-Road Vehicle and Engine Emission Regulations
  • Marine Spark-Ignition Engine, Vessel and Off-road Recreational Vehicle Emission Regulations
  • Off-road Compression-Ignition (Mobile and Stationary) and Large Spark-Ignition Engine Emission Regulations
• Changes how some vehicles are defined so classifications match the U.S. rules:
  • A “heavy‑duty vehicle” would be based only on gross vehicle weight rating (GVWR) over 3,856 kg (8,500 lb) (removes curb-weight and frontal-area tests).
  • Keeps a separate definition for a “heavy‑duty incomplete vehicle” so manufacturers can choose the correct class during build.
  • Adjusts categories so certain electric and hybrid vocational vehicles in Class 8 are classified correctly.
• Gives companies more flexibility on model‑year labeling (e.g., allowing the model year to be the calendar year after main assembly) — reflects U.S. practice starting for 2021 model year vehicles.
• Lets engine families be split into “subfamilies” for CO2 compliance, matching a U.S. allowance used in the CO2 credit system.
• Recognizes hydrogen fuel‑cell vehicles (adds “fuel cell vehicle”) and treats them like electric vehicles for CO2 accounting (zero grams CO2 per short ton‑mile).
• Fixes a Canadian–U.S. mismatch for some large spark‑ignition engines (those running on natural gas or LPG with max power ≥ 250 kW) by adding labelling, maintenance-instruction, and emission-family rules so U.S.‑certified engines can be imported and recognized in Canada.
• Updates several cross‑references to parts of the U.S. Code of Federal Regulations (CFR) that were renumbered.

Who's affected#

• Mostly companies that design, manufacture, import or certify new vehicles and engines for sale in Canada. That includes:
  • On‑road vehicle manufacturers (cars, light trucks, heavy trucks, buses)
  • Heavy‑duty engine makers
  • Makers or importers of marine spark‑ignition engines and off‑road recreational vehicles
  • Makers or importers of off‑road diesel and large spark‑ignition engines
• Government programs that test and verify vehicle/engine compliance will also use the updated references.
• The notice says Indigenous peoples and modern treaty rights are not expected to be affected; if unclear, the department invites comments.

Why it matters#

• Keeps Canadian rules consistent with the U.S., which lowers paperwork and compliance headaches for firms that operate in both markets. That can reduce delays or extra documentation when importing vehicles into Canada.
• Prevents unintended reclassification of hybrids or fuel‑cell vehicles (which could otherwise change what standards apply or what paperwork is required).
• Ensures U.S.‑certified engines and vehicles remain eligible for the Canadian market without extra retrofitting or relabeling in many cases.
• These are technical fixes, not changes to emission limits, so the department says they won’t change the amount of pollution allowed — they mainly reduce administrative friction.