In Colorado, a car's eligibility for an emissions test exemption depends on its model year and fuel type. Generally, vehicles are exempt for a certain period from their initial model year.
Emissions Test Exemptions by Vehicle Type
Colorado law provides specific exemptions from emissions testing based on a vehicle's age (model year) and fuel type. Understanding these criteria is essential for vehicle owners.
Here's a breakdown of the exemption periods:
| Vehicle Type | Exemption Period (from model year) | Requires Emissions Test After (i.e., starting with this model year) |
|---|---|---|
| Gasoline Vehicles | First 7 model years | 8th model year |
| Diesel Vehicles | First 4 model years | 5th model year |
This means a gasoline vehicle does not need an emissions test if it is within its first seven model years. Similarly, a diesel vehicle does not need an emissions test if it is within its first four model years.
Understanding Model Years for Exemptions
The exemption period is counted by model years, not necessarily the calendar year of purchase or the current calendar year. For instance:
- Gasoline Vehicle Example: A 2018 model year gasoline car would be exempt for 2018, 2019, 2020, 2021, 2022, 2023, and 2024 (its 7th model year). Beginning in 2025, as an 8th model year vehicle, it would generally require an emissions test.
- Diesel Vehicle Example: A 2021 model year diesel car would be exempt for 2021, 2022, 2023, and 2024 (its 4th model year). Beginning in 2025, as a 5th model year vehicle, it would generally require an emissions test.
Important Considerations for Colorado Emissions
- Location Matters: Emissions testing requirements often depend on the county where the vehicle is registered. Not all counties in Colorado require emissions testing; tests are typically mandated in the Denver metro area and the Front Range.
- Other Exemptions: While age is a primary factor, other limited exemptions may exist for certain vehicle types or circumstances (e.g., collector vehicles, electric vehicles). For the most current and specific details, it is always recommended to consult the official Colorado Department of Revenue Motor Vehicle website.
For detailed information on Colorado emissions testing requirements, including other possible exemptions and testing locations, visit the official Colorado DMV Emissions page.
