Colorado Department of Revenue
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Frequently Asked Questions

Q. What is the cost of the test?
Q. What vehicles are exempt?
Q. If I live outside of the Emissions area but work inside of the Emissions area, do I need a test?
Q. When do I need an Emissions test?
Q. I have a vehicle that is currently out of state and will not be back in Colorado before the emissions is due. How is this situation handled?