Selling a car that failed smog in Nevada

September 25, 2026·3 min read

A failed smog test doesn't stop a sale

Most of what's written about selling a car that failed smog is about California. Nevada works differently. The Nevada DMV's emission control page is clear on the key point for sellers:

• Private sale: the emissions test is the buyer's responsibility.
• Used car dealer: a dealer must provide a valid passing test with any vehicle it sells that's going to be registered in Clark or Washoe counties.

So a failed test doesn't legally block you from selling your own car. What it changes is who's willing to buy it, and what they'll need to do before registering it.

Where Nevada requires emissions testing

Testing is only required in the urban areas of Clark and Washoe counties, according to the DMV:

• Clark County: the Las Vegas Valley and a five-mile buffer zone around it. The DMV lists Goodsprings and Cold Creek as exempt, and Jean as outside the buffer zone.
• Washoe County: Reno, Sparks and the surrounding testing area on the DMV's map.

Carson City and the rest of Nevada fall outside these testing areas, per the same page.

Cars that don't need a test at all

Before worrying about a failed test, check whether the car needs one. The DMV exempts, among others:

• New vehicles on their first three registrations.
• New hybrid-electric vehicles for their first five model years.
• Vehicles from 1967 or older.
• Electric vehicles, and vehicles that run permanently on propane, compressed natural gas, methane or butane.
• Vehicles with Classic Vehicle, Classic Rod or Old Timer plates driven 5,000 miles or less per year, with a yearly odometer affidavit.

The waiver route if you want to keep it registered

If the car still fails after repairs, the DMV may issue a waiver. It only applies when the car fails for carbon monoxide or hydrocarbon levels on 1968 to 1995 light-duty vehicles, or for an illuminated check engine light on 1996 and newer light-duty vehicles. The rules differ by county:

• Clark County: repairs must be done by a 2G Licensed Authorized Station, with receipts showing at least $450 spent on emissions-related parts and labor. Repairs anywhere else don't count, regardless of cost.
• Washoe County: repairs can be done by a 2G station or by the registered owner, with receipts showing at least $200 spent. Owner-bought parts must be purchased within 14 days of the first test.

A waiver lasts one year, and the DMV says the car must be repaired before the next registration year. The full rules are on the DMV's emission page.

Missing emission parts and help with repair costs

If emission equipment such as a catalytic converter has been removed or disabled, the waiver route is closed: the DMV treats emission device tampering as a repair-only problem. That's worth knowing before you sell privately, because the buyer will face the same rule when they try to register the car.

In Clark County there's some help for older cars. The DMV notes that the Clark County Division of Air Quality's Smog Free Clark County voucher program will pay up to $975 for emissions-related repairs on 1968 to 1999 vehicles, with owner income restrictions. Details are on SmogFreeClarkCounty.com.

Your options as a seller

• Repair, retest and sell. A passing test makes a private sale easier, since the buyer can register the car.
• Sell privately as-is. Legal in Nevada, but tell the buyer it failed. They'll need to get it through smog before registering it in Clark or Washoe.
• Sell to a buyer who takes failed-smog cars. We buy fully owned cars that failed smog, including junk, non-running and wrecked ones, anywhere in our Nevada service area. The online offer is firm, the tow is free, and we pay by check at pickup.

If the car has also stopped running, our junk car guide covers what to expect. Whichever way you sell, the Nevada title, plates and resale notice steps are in our seller's paperwork checklist, and if the title is missing, start with getting a duplicate title.