Where to take your emissions test in Lombard

Lombard does not have its own emissions testing facility. Instead, you will take your vehicle to a test station in DuPage County, the county where Lombard is located. The Illinois Environmental Protection Agency (IEPA) maintains a list of authorized test stations across the state, and you can search by zip code or county to find stations near you.

Most test stations in the Lombard area are independent repair shops or service centers that have been certified by the state to perform emissions testing. You do not have to go to a dealership, and you do not have to use the shop that services your car — any certified station will do. The test itself takes about 10 to 15 minutes and costs between $25 and $35, though prices vary by station.

To find a station, visit the IEPA's online test station locator at cyberdriveillinois.com and search for "emissions test stations" or call the IEPA directly at 217-782-9666 to ask for stations in your area. You can also ask your regular mechanic for a referral — they often know which nearby stations are reliable and have short wait times.

Key Takeaways

  • Lombard residents use DuPage County emissions test stations, which are certified by the Illinois Environmental Protection Agency and found through the state's online locator tool.
  • The test takes 10 to 15 minutes, costs $25 to $35, and you can use any certified station — you do not need to go to your dealership or regular mechanic.
  • You will need your vehicle's registration and proof of insurance, and your vehicle must be in working order with no warning lights on the dashboard.
  • If your vehicle fails, you have 30 days to repair it and retest at no additional charge at the same station, or you can go to a different station and pay again.
  • Your test results are sent electronically to the Secretary of State, so you do not need to pick up a paper certificate or mail anything yourself.

What documents and information to bring

Bring your vehicle's registration and proof of current insurance. The test station will need your vehicle identification number (VIN), which is on your registration and also on the dashboard at the base of the windshield on the driver's side. You do not need to bring your title or proof of ownership beyond the registration.

Have your odometer reading available — the test station will record the mileage. If you have had recent work done on your vehicle, bring the receipt or work order, especially if the work involved the engine, emissions system, or fuel system. This helps the technician understand the vehicle's history if something unusual shows up during the test.

Vehicle condition requirements before you go

Your vehicle must be in running condition and have no active warning lights on the dashboard. If the check engine light is on, the vehicle will fail the test automatically — you will need to have that light diagnosed and repaired first, then return for a retest. Similarly, if your gas cap is loose or missing, the test will fail because the system cannot hold pressure properly.

Make sure your tires are properly inflated and your battery is in good condition. A weak battery can cause the vehicle to run poorly during the test, which may result in a fail. If you have not driven the vehicle in several days, take it for a 10-minute drive before the test to warm up the engine — a cold engine can produce readings that look worse than they actually are.

What happens during the test

The technician will connect a probe to your vehicle's tailpipe to measure emissions. For most vehicles, this is a straightforward tailpipe test that measures hydrocarbons, carbon monoxide, and nitrogen oxides. The test takes about 10 to 15 minutes total, including the time to set up the equipment and run the actual measurement.

You will usually be able to stay in the vehicle during the test, though some stations may ask you to step out. The technician will tell you the results on the spot — either your vehicle passes or it does not. If it passes, the results are sent electronically to the Secretary of State's office within 24 hours, and your registration is updated automatically.

What to do if your vehicle fails

If your vehicle fails, you have 30 days to have it repaired and retested. You can return to the same station for a free retest within that 30-day window, or you can take it to a different certified station and pay the test fee again. Many people choose to return to the same station because the technician already knows the vehicle and can advise on what repairs might help.

Common reasons for failure include a faulty oxygen sensor, a clogged fuel injector, or a problem with the catalytic converter. These repairs typically cost $100 to $500 depending on the issue and your vehicle's age. If you cannot afford the repair when ready, you can still register your vehicle with a failed test result, but you will need to show proof of the repair order or a mechanic's estimate to the Secretary of State.

If your vehicle fails a second time after repairs, you may be able to request a waiver from the IEPA if you can show that you have spent at least $500 on repairs. Contact the IEPA at 217-782-9666 to ask about the waiver process — it is not automatic, but it is available in some situations.

How the results reach the Secretary of State

You do not need to do anything after the test. The test station sends your results electronically to the Illinois Secretary of State's office, usually within 24 hours. Your vehicle registration is updated automatically, and you will see the new expiration date the next time you renew your registration or check your registration status online.

If you need proof that your vehicle passed for insurance purposes or to show a lender, you can print a copy of your registration from the Secretary of State's website at cyberdriveillinois.com, or ask the test station for a printed receipt on the day of the test. Some stations will email you a copy as well.

Timing and scheduling your test

Most test stations in the Lombard area accept walk-ins, but you can also call ahead to ask about wait times or to schedule an appointment. Wait times vary — some stations have no wait on quiet afternoons, while others may have a 30-minute to one-hour wait during lunch or after work. Calling first takes two minutes and can save you a trip.

Plan to have your test done at least a few weeks before your registration expires, in case your vehicle fails and needs repairs. If your registration has already expired, you cannot legally drive the vehicle, so getting the test done early is important. Check your registration card to see the expiration date, or log into the Secretary of State's website to see when your registration is due.

Frequently Asked Questions

Can I test my vehicle in a different county if I live in Lombard?

Yes. Your vehicle must be tested in the county where it is registered, which is DuPage County for Lombard residents. However, you can use any certified station in DuPage County — you do not have to use one in Lombard itself. If you work or spend time in a neighboring county, you cannot use a station there; you must return to DuPage County.

What if I just bought a used car and do not have an Illinois registration yet?

You will need to register the vehicle with the Secretary of State first. Once you have an Illinois registration, you can take the vehicle for an emissions test. If you are buying from a dealer, they can often help you with the registration process. If you are buying privately, visit a Secretary of State office or complete the registration online at cyberdriveillinois.com.

Do hybrid or electric vehicles need emissions tests?

Hybrid vehicles do need emissions tests because they have a gas engine. Electric vehicles do not need emissions tests because they produce no tailpipe emissions. If you own an electric vehicle, you will not be required to get an emissions test, but you still need to renew your registration.

What if the test station says my vehicle cannot be tested?

This can happen if your vehicle is too old, too new, or has a non-standard engine setup. Vehicles from certain model years or with certain modifications may not fit the standard test protocol. Ask the technician what the issue is — they can tell you whether you need to take the vehicle to a different type of testing facility or whether you are exempt from testing. You can also call the IEPA at 217-782-9666 to ask about your specific vehicle.

Can I test my vehicle before my registration expires, or do I have to wait until it is due?

You can test your vehicle up to 120 days before your registration expires. Testing early is actually a good idea because it gives you time to repair and retest if your vehicle fails. The test results are valid for the full registration period once they are submitted to the Secretary of State.