Reno's Smog Check Requirements and Your Vehicle

Reno and the surrounding Washoe County area require a smog check (also called an emissions test) for most vehicles before you can register or renew registration with the Nevada Department of Motor Vehicles. The test measures what your vehicle's tailpipe emits and whether those emissions fall within Nevada's limits.

Not every vehicle needs one. Vehicles registered in Reno that are model year 1975 or newer must be tested, with some exceptions: diesel vehicles, motorcycles, and vehicles that are brand new to Nevada registration may have different rules. Electric vehicles do not require smog checks. If you are unsure whether your specific vehicle needs testing, the Nevada DMV website lists the current exemptions, or you can call a local smog test station and describe your vehicle.

The test itself takes about 30 minutes. A technician connects your vehicle to a machine that reads emissions data directly from your engine's computer (for 1996 and newer vehicles) or performs a tailpipe test (for older vehicles). You do not need to do anything except show up with your vehicle in working condition.

Key Takeaways

  • Reno requires smog checks for most vehicles model year 1975 and newer before DMV registration or renewal.
  • The test costs between $40 and $70 at a licensed smog station and takes about 30 minutes.
  • You can find licensed test stations through the Nevada DMV website or by searching "smog check Reno" — the station must be certified by the state.
  • If your vehicle fails, you have 30 days to repair it and retest at no additional charge at the same station.
  • You cannot register your vehicle with the DMV until you have a passing smog check certificate in hand.

Where to Get Tested in Reno

Nevada maintains a list of licensed smog check stations on the DMV website. In Reno, you will find stations in most neighborhoods — they are typically independent repair shops, tire shops, or dedicated emissions testing centers. Search the state's licensed station directory by zip code or business name to find one near you.

When you call ahead, confirm that the station is currently licensed and ask about wait times. Some stations accept walk-ins; others require appointments. Bring your vehicle keys, current registration (or proof of ownership if you are registering for the first time), and your driver's license. The technician will need to see your vehicle's odometer reading and may ask when you last had maintenance done.

What Happens If Your Vehicle Fails

A failure means your vehicle's emissions exceeded Nevada's limits. The test station will give you a written report showing which emissions were too high. This is not a judgment — it is diagnostic information that tells a mechanic what to look for.

You have 30 days from the test date to repair your vehicle and return to the same station for a retest. The retest is free. Common repairs that fix failures include replacing a faulty oxygen sensor, fixing a loose gas cap, or addressing a check engine light. If you are not sure what to repair, take the failure report to a trusted mechanic and ask them to diagnose the problem.

If you cannot afford repairs right away, you can still register your vehicle with the DMV — but only if you file a Smog Abatement Plan with Washoe County. This plan gives you up to 30 additional days to repair and retest. You will need to show the county that you have scheduled repairs or are working toward them. Contact the Washoe County Air Quality Management Division for the current process.

Cost and Timeline for Registration

A smog check costs between $40 and $70 at a licensed station in Reno, depending on the station and your vehicle type. The test itself takes 30 minutes to an hour. Once you pass, the station issues a certificate (usually printed on the spot) that is valid for 90 days.

You must bring that certificate to the DMV when you register or renew. The DMV will not process your registration without it. If your certificate expires before you get to the DMV, you will need to retest. Plan to get your smog check within a few weeks of your registration appointment to avoid this.

Understanding Your Smog Check Certificate

A passing smog check certificate is a one-page document issued by the test station. It shows your vehicle's identification number (VIN), the test date, the station's name and license number, and a statement that your vehicle passed. The certificate is valid for 90 days from the test date.

Bring the original certificate to the DMV — they will not accept a copy or a photo. If you lose it, you will need to retest. Some stations keep records and can issue a duplicate, but it is faster to just retest if you have time before your registration important date.

Vehicles That Do Not Need Smog Checks

Electric vehicles are exempt from smog checks in Nevada because they produce no tailpipe emissions. Vehicles model year 1974 and older are also exempt. Motorcycles, mopeds, and some other specialty vehicles have different testing rules or are exempt entirely.

If you are registering a vehicle for the first time in Nevada and it was previously registered in another state, check with the DMV about whether your out-of-state smog check will be accepted. Some states' tests meet Nevada's standards; others do not. The safest approach is to get a Nevada smog check to avoid delays at registration.

Frequently Asked Questions

Can I get a smog check if my check engine light is on?

Most stations will test your vehicle even with the light on, but your vehicle will likely fail because the light indicates an emissions-related problem. Get the light diagnosed and repaired first, then retest. A mechanic can read the code for $50 to $100 and often can fix it for less than the cost of multiple failed tests.

What if I just moved to Reno from out of state?

Nevada requires a smog check before you can register your vehicle here, even if it passed in your previous state. You have 60 days from moving to Nevada to register your vehicle. Schedule your smog check within the first 30 days so you have time to repair and retest if needed.

Do I need a smog check if I am just renewing my registration?

Yes, Reno requires a smog check every two years when you renew your registration. The DMV will not process your renewal without a current passing certificate. Plan ahead so you are not caught without one when your registration expires.

What if my vehicle is registered outside Reno but I live here?

If your vehicle is registered in another Nevada county or another state, you still need to follow that jurisdiction's smog check rules. When you move to Reno, you will eventually need to re-register your vehicle in Washoe County, at which point Reno's smog check requirement applies. Check with the DMV about the timeline for re-registering an out-of-state vehicle.

How do I know if a smog station is actually licensed?

The Nevada DMV publishes a list of licensed stations on its website. You can search by zip code or station name. If a station is not on that list, it is not licensed and its test will not be accepted by the DMV. Always verify before you go.