Emissions tests in every state › Colorado
Colorado emissions testColorado: Air Care Colorado
Will your car pass Colorado's emissions test? For cars from 1996 on, the station plugs into your car and reads the same things Athena OBD reads, so you can know before you go.
Where
Denver metro / North Front Range: Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, Jefferson, parts of Larimer and Weld
Which cars
1982+; newest 7 model years exempt; plug-in test only for 1996+ vehicles in model years 8-11, older get a treadmill tailpipe test dyno test
What it takes to pass
- The check engine light must work and be off, with no fault stored that turns it on.
- Cars from 2001 on: one of the car's self-tests may be unfinished.
- Just reset the codes or changed the battery? The self-tests start over: drive normally for a few days, in town and on the highway, before you go.
Check your car's year
A guide, not a guarantee: stations also check things Athena OBD can't (the gas cap, paperwork), and rules change. Checked against Colorado's sources in October 2026.
Drive a BMW?
Athena OBD reads the engine codes every car shares. Our sister app, AutoLingo for BMW, goes much further on a BMW: the airbags, ABS, instrument cluster and body modules too, plus service resets, even on older E-chassis cars.
See AutoLingo for BMW