Air Care Colorado: News Flash



1-7 years old 

8 - 11 years old
(including hybrid vehicles)

12 years old to
model year 1982
I/M 240

Vehicles equipped with OBD,  
that are too large or too small
or are otherwise incompatible
with the dynamometer ,
will be given an OBD test

1981 and older


Be sure your vehicle
is READY for its 

If your vehicle
fails its first

BEFORE the retest,
AFTER a repair or
reconnecting the 

your vehicle's 
computer to READY

Then, within 10 days
of the failed test,
return to an Air Care
station for a
FREE retest


Sure your vehicle
needs an 

Vehicles LESS THAN
7 model years old
do not require
an inspection.

Know Before
You Go

Know Before You Go ck engine 180 x 180 web ad.jpg


Find out WHY your

vehicle received an
was not tested 
because it was
you were given an

for an


Check out the 

CheckEngine_225x225 60 percent.jpg

Is your 
"Check Engine"
light on?

If it's lit,
don't ignore it!



Air Care Colorado: Facts at a Glance


Have a diesel? Diesel vehicles must be tested at independent testing facilities, Air Care stations do not test diesel-powered vehicles. Click here for a list of Independent Diesel Testing Centers.

Know Before You Go

Look up a vehicle's recent emission testing history.Vehicle Test History


Air Care Colorado

Registered Repair 
Enter Repair
Forms Here!


Welcome to AirCare Colorado

Vehicle emissions testing is part of the state of Colorado's overall strategy to improve air quality in and around Denver, Boulder and the North Front Range. Vehicles are one of the largest contributors to harmful air pollution that leads to adverse health effects. The inspection program is designed to help reduce those pollutants including harmful ozone precursor emissions. To find the answers to specific questions choose from the menus above, or visit our search our site!

HOURS:       Mon. to Fri. 8 am to 5:30 pm & Sat. 8 am to 1 pm
PAYMENT:  1982 & newer: $25  1981 & older: $15  VIN Verfications: $20
(Please, NO temporary checks or checks with address different from ID.) 

Air Care inspects only gasoline powered vehicles.

**Hybrid vehicles eight (8) years and older require an On-Board Diagnostics (OBD) test every two years.
** All-Electric vehicles are exempt from testing. 



Spring is Here, Time for a Little Car Care

National Car Care month is just a couple of weeks away and the Car Care Council has some good advice.

They recommends setting aside a little time during National Car Care Month in April to get your vehicle ready for the spring and summer driving season.

Extreme cold, potholes and road salt take their toll in the winter months, so spring is a great time to show your vehicle a little care with a little maintenance. It could save you time and money in the future. 

The non-profit Car Care Council recommends that motorists follow three simple steps during National Car Care Month in April.

  • Keep your vehicle clean. Regular car washes and waxes protect the paint and body of your car from corrosive debris. In parts of the country where salt is used on the roads, regularly washing is especially important.
  • Keep your car on schedule. Every vehicle has a manufacturer recommended maintenance schedule. Whether you choose to do your own maintenance or patronize a local repair shop, following a routine service schedule is essential to keeping your car in safe and dependable working order.
  • Keep an eye on the little things. Your windshield wipers aren't cleaning as well as they should? Your gas tank is missing its cap? There's a warning light on your dashboard?  When you see your car needs attention, don't delay. Repairing small things now can help avoid more costly problems down the road, and add years of useful vehicle life.

The Car Care Council offers many free tools on its website to help consumers drive smart, save money and be car care aware, including the popular 60-page Car Care Guide and a custom service schedule and email reminder service.

The Car Care Council is the source of information for the "Be Car Care Aware" consumer education campaign promoting the benefits of regular vehicle care, maintenance and repair to consumers. For a copy of the council's Car Care Guide or for more information, visit


SOURCE: Car Care Council


October is Car Care Month. Show your wheels some love!

Nothing says 'vehicle maintenance' like falling leaves and jack-o-lanterns, right?!

It's October, National Car Care Month, not just the month for candy love, but a time for a little car love too. Get ready for those cold, snowy days ahead with some basic vehicle maintenance. Simple checks and service can ensure your safety and keep your car running and you out of the cold.

The not-for-profit Car Care Council recommends the following basic fall maintenance:


  • Check all fluids, including engine oil, power steering, brake and transmission as well as windshield washer solvent and antifreeze/coolant.
  • Check the hoses and belts to make sure they are not cracked, brittle, frayed, loose or showing signs of excessive wear.
  • Check the battery and replace if necessary. Make sure the connection is clean, tight and corrosion-free.
  • Check the brake system annually and have the brake linings, rotors and drums inspected at each oil change.
  • Inspect the exhaust system for leaks, damage and broken supports or hangers if there is an unusual noise. Exhaust leaks can be dangerous and must be corrected without delay.
  • Check engine performance to make sure it is delivering the best balance of power and fuel economy and producing the lowest level of emissions.
  • Check the heating, ventilating and air conditioning (HVAC) system as proper heating and cooling performance is critical for interior comfort and for safety reasons such as defrosting.
  • Inspect the steering and suspension system annually including shock absorbers, struts and chassis parts such as ball joints, tie rod ends and other related components.
  • Check the tires, including tire pressure and tread. Uneven wear indicates a need for wheel alignment. Tires should also be checked for bulges and bald spots.
  • Check the wipers and lighting so that you can see and be seen. Check that all interior and exterior lighting is working properly and replace worn wiper blades so you can see clearly when driving during precipitation.

The Car Care Council is the source of information for the "Be Car Care Aware" consumer education campaign promoting the benefits of regular vehicle care, maintenance and repair to consumers. For a free copy of the council's popular Car Care Guide or for more information, visit



What Do You Mean My Car's Not Ready?!

Imagine your surprise, and frustration, when you take your vehicle for its periodic emissions inspection and the inspector tells you she can't test your vehicle because it's "not ready." Or, you already had an inspection but your vehicle failed. You had repairs done and have now returned to the inspection station for the retest but the inspector tells you he can't test it because it's "not ready."

What?! The engine starts, the vehicle is drivable, what does "not ready" mean?

It basically means that the computer in the vehicle that monitors the emissions control systems is "not ready" to be tested because it has been recently disconnected or reset.

Newer vehicles - less than 12 years old - now require an OBD (On-Board Diagnostics) inspection. The OBD inspection is a "plug-in" computer test rather than the road simulation test that is given to vehicles that are 12 years and older.

Vehicles equipped with OBD systems continuously self-test their emissions control systems using various monitors. These tests are commonly referred to as "readiness monitors." These monitors identify whether a vehicle's computer has completed the required "self-tests" while the vehicle is being driven. Basically a continuous on-road inspection.

If a self-test has been completed, the system will be reported as "ready." An incomplete self-test will be reported as "not ready." A vehicle with "not ready" status cannot be inspected until all of the self-tests are completed and the monitors are set to "ready." This generally means driving for a while to complete at least one full drive cycle, sometimes more, and then returning to an Air Care station for an reinspection.


  • Recent vehicle repairs in which diagnostic trouble codes have been cleared with an OBD scan tool
  • The battery was recently disconnected or replaced
  • The vehicle's computer requires a software upgrade
  • A pending problem has not yet illuminated the "check engine" light


To allow the vehicle's monitors to become "ready" it must be driven so that the self-tests can be completed and the monitors can be reset to "ready." To do this, the vehicle must run through its specific drive cycle, which depends on the vehicle make and model and which monitor(s) need to be reset. In most cases, two drive cycles are required to reset the monitors.


A drive cycle generally requires combined city and highway driving and includes cool periods. You can drive the vehicle as directed in the owner's manual (look under OBD), or consult with your repair technician who should be able to tell you to complete a vehicle or monitor specific drive cycle. 

If your vehicle failed the inspection, be sure to complete the drive cycle and return within 10 days to get a free reinspection.