Emissions testing locations and hours in Lakewood

Lakewood is part of the Denver metro area, which means you can get your emissions test at any Colorado Department of Transportation (CDOT) approved testing station in the region — you do not have to use a station in Lakewood itself. The state maintains a searchable list of all approved stations on the CDOT website, organized by county and city. Most stations are independent repair shops, tire shops, or quick-lube facilities that have been certified to run the test.

To find stations near you, go to the CDOT Air Quality website and use their station locator tool. You will need to enter your location or zip code. The tool shows each station's address, phone number, and hours. Many stations are open Monday through Friday during business hours, with some offering Saturday morning appointments. Call ahead before you go — not all stations accept walk-ins, and some require an appointment, especially during peak testing months (August through October).

The test itself takes about 10 to 15 minutes once you are in the bay. You will need your vehicle registration and proof of insurance. Bring your keys and be prepared to stay while the technician runs the test on a dynamometer, which simulates driving conditions while measuring your vehicle's exhaust output.

Key Takeaways

  • Any CDOT-approved testing station in the Denver metro area will test your Lakewood vehicle — you are not limited to Lakewood locations.
  • Find approved stations and their hours using the CDOT Air Quality station locator on their website.
  • Most stations require an appointment, especially during August through October, so call before you go.
  • The test costs between $20 and $30 and takes 10 to 15 minutes; bring your registration and proof of insurance.
  • If your vehicle fails, you have 60 days to repair it and retest at no additional charge at the same station.

What happens if your vehicle fails the emissions test

If your vehicle fails, the testing station will print a report showing which emissions standards it did not meet. You then have 60 days from the test date to have repairs made and return for a retest. The retest is free at the same station where you failed — you do not pay the testing fee again.

Common reasons for failure include a faulty oxygen sensor, a malfunctioning catalytic converter, or an engine control module problem. The test report will not tell you exactly what is wrong, only that your vehicle exceeded the allowed limits for nitrogen oxides, particulate matter, or hydrocarbons. You will need to take the report to a repair shop to diagnose the specific problem.

If you repair the vehicle and pass the retest within 60 days, you are done. If you do not retest within 60 days, you will need to take a new test and pay the fee again. If your vehicle fails a second time, you have another 60 days to repair and retest.

Colorado emissions testing requirements for Lakewood residents

Lakewood is in Jefferson County, which is part of the Denver ozone nonattainment area. This means all vehicles registered in Lakewood must pass an emissions test every two years, regardless of age or condition. The test is required before you can renew your vehicle registration.

Your registration renewal notice will tell you whether an emissions test is required. If your vehicle is model year 1981 or older, it is exempt from testing. Diesel vehicles registered after 2009 must also pass a test. Electric vehicles and some hybrid vehicles are exempt.

You must complete the test before your registration expires. If you let your registration lapse without getting the test, you cannot legally drive the vehicle in Colorado, and you may face fines when you renew.

How to schedule an appointment at a Lakewood-area testing station

Once you have found a station using the CDOT locator, call the station directly to book an appointment. Have your vehicle's year, make, model, and license plate number ready when you call. Many stations will ask when you need to renew your registration so they can prioritize you if you are close to the important date.

Some stations use online booking systems, but most still take appointments by phone. If a station is fully booked, ask if they have a cancellation list or if they can recommend another nearby station with availability. During peak season (August through October), appointments can fill up two to three weeks in advance, so plan ahead if your registration expires in the fall.

If you cannot get an appointment before your registration expires, you can renew your registration online or by mail with a temporary extension, then schedule the test within 30 days of renewal. Contact the Jefferson County Clerk and Recorder's office to ask about extension options.

What to bring and how to prepare your vehicle

Bring your vehicle registration, proof of insurance, and a valid photo ID. The testing station will need your registration to look up your vehicle's emissions history and confirm that a test is required. Have your keys ready so you can start the vehicle when the technician asks.

Before you go, make sure your vehicle has been driven for at least 20 minutes so the engine is warm. A cold engine can produce different emissions readings and may cause a false failure. If your check engine light is on, the vehicle will fail the test automatically — have that diagnosed and repaired first.

Do not make any major repairs or modifications to your vehicle when ready before testing. If you have just had work done, drive the vehicle for a few hundred miles to let the engine computer relearn and adjust before testing.

Retesting after a repair in Lakewood

After you have had repairs made, return to the same testing station where you failed. You do not have to use the same station, but it is simpler because they have your original test results on file. Bring the same documents you brought for the first test: registration, insurance, and ID.

Tell the technician that you are retesting after a failure. They will run the same test and compare the results to your original test. If you pass, you will receive a passing certificate that you can print or have emailed to you. Take that certificate or your registration to the Jefferson County Clerk and Recorder to complete your registration renewal.

If you fail a second time, you have another 60 days to repair and retest. After two consecutive failures, Colorado allows you to obtain a waiver if you have spent at least $375 on repairs. Contact the testing station or CDOT for information about the waiver process.

Frequently Asked Questions

Can I test my vehicle at any station in Colorado, or does it have to be in Lakewood?

You can test at any CDOT-approved station in the Denver metro area. Lakewood is part of the Denver ozone nonattainment area, so any approved station in that region will accept your vehicle. You do not have to stay in Lakewood or Jefferson County.

What if I fail the emissions test twice?

After two consecutive failures, you may be able to obtain a waiver if you have spent at least $375 on repairs and can document those repairs. Contact the testing station or call CDOT Air Quality to ask about the waiver process and what documentation you will need.

Do I need an emissions test if I just bought a used car in Lakewood?

Yes, if the vehicle is registered in Lakewood and is not exempt (1981 or older, or an electric vehicle), it must pass an emissions test before you can renew the registration. The test is required every two years, regardless of when you bought the vehicle.

How much does an emissions test cost in Lakewood?

Testing fees range from $20 to $30 depending on the station. The retest after a failure is free at the same station. Call ahead to confirm the exact price, as fees can vary.

What if my check engine light is on when I go for the test?

Your vehicle will fail the test automatically if the check engine light is illuminated. Have the problem diagnosed and repaired before you schedule your test. Once the light is off and the repair is complete, you can schedule a new test.