Selling a car that failed its emissions or smog test

So the real question isn't whether you're allowed to sell. It's who has to clear the test, and whether fixing the car first is worth the money.

Why the rules change at the state line

There is no single national emissions test. The US EPA explains that inspection and maintenance programs exist to find high-emitting cars so their owners repair them, and the 1990 Clean Air Act amendments required them in several areas. But each local program sets its own testing sites, schedule, covered vehicles, repair waivers and rules for out-of-state cars.

That's why a car that failed in Denver may face no test at all two hours away, and why the answer for you starts with where the car is registered and where the buyer lives.

California: the seller carries the test

California is the clearest case. The California DMV puts it plainly: when you sell your car, "you must give the new owner a valid smog certification." The Bureau of Automotive Repair adds that the Smog Check comes before the sale and the seller gives the buyer a copy of the inspection report.

A few details matter if your car failed:

• The certificate expires. BAR sends it to the DMV electronically, and it is good for 90 days. A buyer from a private seller should expect a pass from within that window.
• Newer cars skip it. Cars four model years old or newer don't need a Smog Check at a change of ownership; a smog transfer fee goes to the DMV instead.
• Rural areas test only at sale. BAR's reference guide describes Change of Ownership areas where cars are tested only when sold or first registered, so a sale is exactly when a failure surfaces.

So a California seller whose car failed can't hand over a passing certificate. Say so up front.

Missouri asks the seller too

Missouri's selling checklist wants a recent emissions inspection, under 60 days, from any seller living in the City of St. Louis or in Jefferson, St. Charles or St. Louis County.

Where the buyer handles it

Nevada goes the other way. Its DMV says that in private transactions the emissions test is the buyer's responsibility.

Even where the law doesn't make you pass, an honest buyer will ask. Tell them the car failed. A buyer who knows can plan for it; one who finds out later has a reason to come back to you.

Waivers: spend a set amount, then stop

Most testing programs cap what you have to spend. Do the qualifying repairs, keep the receipts, and if the car still fails, a waiver can let it register. These are the thresholds the official pages state:

Two warnings. Texas DPS says every repair receipt must be kept and shown when you apply, and you can apply only once per annual testing cycle (Texas DPS). And New York's form says an emissions waiver can't be issued on a car sold by a dealer, because dealer sales fall under used vehicle certification.

Help paying for repairs

The EPA notes that some state and local programs offer repair or replacement help for low-income drivers. California's is the most detailed. Its Consumer Assistance Program can pay toward emissions repairs:

• up to $1,450 for model year 1996 and newer
• up to $1,100 for model years 1976 to 1995

To qualify, your household's gross income can't exceed 225% of the federal poverty level, you must hold the title as the registered owner, and the car has to have failed its biennial Smog Check. You pay a co-payment of 20% of the diagnosis and repair cost up to $1,375; above that, the $1,100 amount is subtracted before the co-payment is figured.

Where your state stands

This table covers each state's emissions program as its official pages describe it. A state with no program has nothing for a car to fail.

Testing zones follow county or ZIP lines in many states, so check the program's own lookup when you're near an edge. Oregon's DEQ, for one, has a boundary lookup for registration addresses.

Repair first, or sell it failed?

Start with the shop's diagnosis, not the failed report alone. Then weigh three numbers:

1. The repair estimate. Get it in writing, with the parts named.
2. Your waiver cap. If you live where a waiver applies, you may only have to spend up to that figure, provided the repairs qualify and you keep receipts.
3. What the car brings in each condition. A passing car sells to more buyers. A failed one sells to fewer, but you skip the repair bill.

Fixing tends to make sense when the car runs well otherwise, the repair is under the waiver cap, or you qualify for repair help like California's program. Selling as it sits tends to make sense when the estimate climbs past what a passing car would be worth, when the failure is one symptom of a tired engine, or when you live in a state where the buyer carries the test anyway. Our repair costs more than value guide walks through that math.

If a safety inspection failed too, read selling a car that failed inspection.

Selling it to us

We buy whole non-running and junk cars, and a car that failed emissions qualifies. You can sell the whole car as it sits, with no smog repair first. Pickup is free anywhere in the US.

In your offer request, include the failed test and whatever the shop said caused it.

Questions before you decide? Call (877) 421-6008.

Once the car is gone, handle the plates and your state's sale notice; after you sell lists each state's steps.