What Smog Check requires in Reno

Reno requires a smog check (also called an emissions test) for most vehicles registered in Washoe County. You need one every two years when you renew your vehicle registration, unless your vehicle is exempt. The test checks whether your car's exhaust meets Nevada's emissions standards.

The test itself takes about 10 to 15 minutes. A technician will connect your vehicle to a machine that measures tailpipe emissions. You do not need an appointment at most testing stations, though some accept them. The cost is set by the state and does not vary by location — expect to pay around $50 to $60, though the exact amount may change.

You must pass the smog check before you can renew your registration. If you fail, you have 30 days to repair the vehicle and retest at no additional charge at the same station. If you do not pass within 30 days, you will need to pay for another test.

Key Takeaways

  • Reno requires a smog check every two years when you renew your vehicle registration, with limited exemptions for newer and older vehicles.
  • The test takes 10 to 15 minutes and costs around $50 to $60; you can walk in without an appointment at most stations.
  • If you fail, you have 30 days to repair your vehicle and retest for free at the same station.
  • You can find certified testing stations through the Nevada Department of Environmental Protection website or by searching for "smog check near me" in Reno.
  • Bring your vehicle registration and proof of insurance; some stations may ask for your vehicle identification number (VIN).

Which vehicles are exempt from smog check in Nevada

Not every vehicle in Reno needs a smog check. Vehicles that are 1975 or older are exempt because they predate modern emissions standards. Vehicles that are brand new — typically the current model year — are also exempt for their first registration.

Electric vehicles and hybrid vehicles are exempt from smog checks in Nevada. If you own a vehicle that runs entirely on electricity or uses both an electric motor and a gas engine, you do not need to test it. Diesel vehicles have different rules depending on their weight and age; check with your local Nevada DMV office if you own a diesel truck or commercial vehicle.

If your vehicle is exempt, you still need to renew your registration every two years, but you will not be required to submit a smog check result. The DMV will not ask for one.

Where to find a smog check station in Reno

The Nevada Department of Environmental Protection maintains a list of certified smog check stations across Washoe County. You can search for stations on their website by entering your zip code or city name. The list shows each station's address, phone number, and hours of operation.

Most smog check stations in Reno are independent repair shops, tire shops, or dedicated testing facilities. You do not have to use the station closest to you — you can choose any certified station in the state. Some stations are open early morning or evening to accommodate working schedules; a few are open on Saturdays.

When you call ahead, ask whether they accept walk-ins or prefer appointments. Some stations fill up during lunch hours or late afternoon, so calling first can save you a wait.

What to bring and how to prepare your vehicle

Bring your vehicle registration and proof of insurance. The technician will need your vehicle identification number (VIN), which is on your registration and on the dashboard of your car. Some stations ask for your driver's license as well.

Before you go, make sure your vehicle is in reasonable running condition. If your check engine light is on, the station will likely not test your vehicle until you have the issue diagnosed. A mechanic can read the code for you, often for free or a small fee. If your vehicle has obvious problems — a broken tailpipe, missing gas cap, or severe exhaust leak — get those fixed first, as they will cause you to fail.

Your vehicle's engine should be warm but not hot when you arrive. Do not wash your engine when ready before testing, as moisture can interfere with the equipment. Arrive with at least a quarter tank of gas; some testing procedures require the fuel tank to be at a certain level.

What happens if you fail the smog check

If your vehicle fails the test, the station will give you a detailed report showing which emissions exceeded the limit. You have 30 days from the test date to repair your vehicle and return to the same station for a free retest. You do not pay again during this 30-day window.

The report will tell you what failed — usually nitrogen oxides, hydrocarbons, or carbon monoxide. Common repairs include replacing a faulty oxygen sensor, fixing a vacuum leak, or replacing a catalytic converter. A mechanic can use the failure report to diagnose the problem more quickly than starting from scratch.

If you do not retest within 30 days, you will need to pay the full testing fee again. You cannot renew your registration without a passing smog check result, so failing and not retesting will delay your registration renewal.

Smog check and vehicle registration renewal in Reno

You must have a passing smog check result before you submit your registration renewal to the Nevada DMV. When you renew online, by mail, or in person at a DMV office, you will need to provide the smog check station's confirmation number or the test result document.

The smog check result is valid for 30 days from the test date. If you test early and then wait too long to renew, your result may expire and you will need to test again. Plan to test within a week or two of your registration renewal important date to avoid this.

If your registration has already expired and you have not renewed it, you can still get a smog check — the vehicle does not need to be currently registered to be tested. Once you pass, you can then renew your registration.

Special situations: out-of-state vehicles and recent moves

If you recently moved to Reno from another state and registered your vehicle in Nevada for the first time, you will need a smog check before your first renewal. The timing depends on when you registered — some new Nevada residents get a grace period, but you should contact your local DMV office to confirm your specific important date.

If you are buying a used vehicle in Reno, the seller should provide you with a current smog check result as proof the vehicle passed. Nevada law requires sellers to disclose whether a vehicle passed or failed its most recent smog check. If you are buying from a private party and the smog check has expired, you will need to get a new one before you can register the vehicle in your name.

Frequently Asked Questions

Can I get a smog check before my registration expires?

Yes. You can test up to 90 days before your registration renewal date. The result will be valid when you renew. Testing early can help you avoid a last-minute rush if your vehicle fails and needs repairs.

What if I move out of Washoe County but keep my Nevada registration?

Smog check requirements depend on where your vehicle is registered, not where you live. If your registration stays in Washoe County, you still need a smog check every two years. If you change your registration to a different Nevada county, check that county's requirements — some counties do not require smog checks.

Do I need a smog check if I am selling my car in Reno?

You must disclose the results of your vehicle's most recent smog check to the buyer. If your check has expired or your vehicle failed, you must tell the buyer. You do not have to repair the vehicle or get a new test before selling it, but the buyer will need to pass a smog check before they can register it in their name.

How long does a smog check result stay valid?

A passing smog check result is valid for 30 days from the test date. You must submit it to the DMV within that window to renew your registration. If the result expires before you renew, you will need to test again.

What if my vehicle is registered in another state but I live in Reno?

You are not required to get a Reno smog check if your vehicle is registered out of state. However, if you plan to register your vehicle in Nevada, you will need to pass a smog check at that time, unless your vehicle is exempt.