All Colorado State Offices will closed on Wednesday, June 19, 2024 in observance of Juneteenth.

 
1

Gas Emissions Requirements

2024 Gas Emissions Requirements

Model Year

Gas or Hybrid

Frequency of Test

Testing Fee

2024

Exempt

n/a

n/a

2023

Exempt

n/a

n/a

2022

Exempt

n/a

n/a

2021

Exempt

n/a

n/a

2020

Exempt

n/a

n/a

2019

Exempt

n/a

n/a

2018

 Renewals are Exempt
-------------------
Need test if transfer of ownership

n/a
----------
Every two years

n/a
--------
$25.00

1993-2017

Need test

Every two years

$25.00

1976-1992
with Collector Plates

Need test

Every five years

1976 - 1992 = $15.00
1982 - 1992 = $25.00

1976-1992
without Collector Plates

Need test

1976 - 1992 = Annually
--------------------
1982 - 1992 = Every two years

1976 - 1992 = $15.00
-------------------
1982 - 1992 = $25.00

1976 or newer
Grandfathered*

Exempt

n/a

n/a

1975 and older with
Collector Plates

Exempt

n/a

n/a

1975 and older without
Collector Plates

Need test

Annually

$15.00

Horseless Carriage / Kit Cars /
All-Electric Vehicles and
Street Rods

No test needed

n/a

n/a

*Vehicles model year 1976 or newer that have been registered as a "collector's item" prior to September 1, 2009, and the
registration has never lapsed or expired or had a change of ownership.



 

  • 1983 and newer vehicles: An emissions test is required every two years for vehicles more than seven model years old. Your vehicle registration renewal postcard will state whether or not a test is required, or if your vehicle has qualified for the roadside emissions test. The fee is $25.
  • 1982 and older vehicles without collector plates: A two-speed idle test is required every year at an Air Care Colorado station or at an independent, license test station. The fee is $15.
  • Change of ownership: An emissions test is required when a vehicle is sold or its ownership changes. The seller is responsible for obtaining the test. The dealer is responsible for repairing or repurchasing the vehicle if it fails the emissions test, but the consumer must return the vehicle to the dealer within 3 days of the purchase.
  • New MSO (Manufacturer Statement of Origin), MCO (Manufacturer Certificate of Origin) vehicles purchased from a dealer are exempt from emissions
    testing for seven years.
     

Important Notice: Be sure your vehicle is due for an emissions test before going to an Air Care Colorado testing station.

State regulation requires testing stations to test all vehicles that are presented for testing. If you are not sure if your vehicle needs an emissions test, call
the State Emissions Program at (303) 205-5603.