Where to Take Your Vehicle for Emissions Testing in Littleton
Littleton is in Arapahoe County, which requires emissions testing for most vehicles. You can take your car to any Colorado Department of Revenue-licensed emissions testing station — not just ones in Littleton itself. The state maintains a searchable list of all licensed stations on its website, and you can filter by location to find stations near you.
In and around Littleton, you'll find testing stations at independent repair shops, tire shops, and some larger automotive chains. Call ahead before you go. Many stations operate on a first-come, first-served basis and can have wait times during peak hours (typically late afternoon and weekends). Some stations accept appointments, which can save you time.
The test itself takes about 10 to 15 minutes once you're in the bay. You'll need to bring your vehicle registration and proof of insurance. If your vehicle fails, the station will provide a printed report showing which emissions systems didn't meet standards — you'll need this to know what to repair.
Key Takeaways
- Any Colorado Department of Revenue-licensed emissions testing station can test your vehicle; you are not limited to Littleton locations.
- The test costs between $25 and $35 depending on your vehicle type and the station you choose.
- You must bring your vehicle registration and proof of insurance to the testing station.
- If your vehicle fails, you have 60 days from the test date to repair it and retest at no additional charge at the same station.
- Vehicles older than 1975 and some newer electric or hybrid vehicles are exempt from testing in Colorado.
When Littleton Emissions Testing Is Required
Arapahoe County requires emissions testing every two years for most vehicles. Your registration renewal notice will tell you whether your vehicle needs testing that year. If testing is required and you don't complete it before your registration expires, you cannot legally renew your registration.
The testing requirement applies to vehicles registered in Arapahoe County, regardless of where you live or work. If you've recently moved to Littleton from a county that doesn't require testing, you'll need to test your vehicle before your first registration renewal in Arapahoe County.
Some vehicles are exempt: those manufactured before 1975, diesel-only vehicles, and certain electric or plug-in hybrid models. Your registration paperwork will indicate if your vehicle is exempt. If you're unsure, the testing station can tell you when you call.
What Happens If Your Vehicle Fails the Test
A failed test doesn't mean your vehicle is unsafe to drive — it means one or more emissions systems didn't meet Colorado's standards. The testing station prints a detailed report showing which systems failed. Common failures involve the oxygen sensor, catalytic converter, or the vehicle's computer diagnostic system.
You have 60 days from the test date to repair the vehicle and retest. The retest is free at the same station where you failed, even if you take the vehicle elsewhere for repairs. You don't need to bring proof of repairs — the station straightforward retests the vehicle. If it passes the second time, you're done.
If you can't afford repairs when ready, you can still renew your registration by filing a waiver form with the Colorado Department of Revenue. The waiver allows you to register the vehicle for one year while you arrange repairs. You'll need to show the failed test report and proof that you've obtained repair estimates. After one year, you must either pass the test or file another waiver.
Cost and Payment at Littleton Testing Stations
The test fee ranges from $25 to $35 depending on your vehicle type. Diesel vehicles and vehicles with special equipment sometimes cost more. Most stations accept cash, debit, and credit cards. Call ahead if you want to confirm the exact price for your vehicle type.
If you fail and need to retest, the retest is free at the same station. If you take your vehicle to a different station for the retest, you'll pay the full fee again. This is why most people retest at the original station.
Documents You Need to Bring
Bring your current vehicle registration and proof of insurance. The registration shows the vehicle identification number (VIN) and confirms that testing is required. Proof of insurance can be a physical card, a printed email from your insurance company, or a digital copy on your phone — most stations accept any of these formats.
If your vehicle failed a previous test and you're retesting, bring the failed test report. The station uses it to verify that you're retesting the same vehicle and that the 60-day window hasn't expired. If you've lost the report, the station can look up your test history using your VIN and registration.
Finding a Testing Station and Scheduling
The Colorado Department of Revenue website has a searchable map of all licensed testing stations. Enter your zip code or city name to see stations near Littleton, along with their hours and phone numbers. Many stations list their hours online, but calling ahead is still the best way to confirm they're open and to ask about wait times.
Some stations are busier than others. Independent repair shops often have shorter waits than large chains. Early morning and midweek visits typically mean less waiting. If a station is too busy when you call, ask when they're usually quieter or whether they take appointments.
You don't have to test at the station closest to you. If one station has a long wait and another nearby has availability, you can go to either one. Just make sure it's licensed by the Colorado Department of Revenue — all licensed stations follow the same testing standards.
What Happens During the Actual Test
When you arrive, the technician will verify your registration and insurance, then ask you to drive the vehicle into the testing bay. The vehicle is connected to a computer that reads emissions data from your vehicle's onboard diagnostic system. The technician doesn't need to do anything to your car — the computer does the work.
The test measures tailpipe emissions and checks whether your vehicle's diagnostic system is functioning properly. It takes about 10 to 15 minutes. You can wait in the station's waiting area or leave and come back — most stations will call or text you when the test is done.
Once the test is complete, you'll receive a printed report. If you passed, the report shows that your vehicle meets Colorado standards. If you failed, the report lists which emissions systems didn't meet standards. Keep this report — you'll need it if you file a waiver or if you need to show a mechanic what to repair.
Frequently Asked Questions
Can I test my vehicle at any Colorado emissions station, or does it have to be in Littleton?
You can test at any Colorado Department of Revenue-licensed station in the state, not just in Littleton or Arapahoe County. However, you must retest at the same station where you failed if you want the retest to be free. If you move or prefer a different station, you'll pay the full fee for the retest.
What if I just moved to Littleton and my old county didn't require emissions testing?
Once you register your vehicle in Arapahoe County, you'll be subject to Arapahoe County's testing requirement. Your registration renewal notice will tell you whether testing is required. You must complete the test before your registration expires or you won't be able to renew.
Do I need an appointment, or can I just show up?
Most stations operate on a first-come, first-served basis, but some accept appointments. Call the station you plan to visit and ask. Appointments can reduce wait time, especially during busy seasons like the weeks before registration important date.
What if my vehicle is very old or electric?
Vehicles manufactured before 1975 are exempt from testing. Many electric and plug-in hybrid vehicles are also exempt. Your registration paperwork will indicate if your vehicle is exempt. If you're unsure, call a testing station with your vehicle's year and model — they can tell you in seconds.
Can I renew my registration if I haven't passed the emissions test yet?
No, you cannot renew your registration without passing the test or filing a waiver. If you file a waiver, you can register for one year while you arrange repairs. You'll need the failed test report and proof of repair estimates to file the waiver with the Colorado Department of Revenue.