
The short answer is: Yes, a mandatory Emissions Inspection is required for most used cars registered in Greensboro, though there are still exemptions, plus, this requirement is dictated by the county where your vehicle is registered. Let’s quickly get into breaking this down.
Critical Exemptions: Who Can Skip the Emissions Test?
To begin, let’s make sure the county in which your vehicle is registered counts as an “emission county”.

If your county does require the emissions inspection, then let’s see if your vehicle falls within the guidelines.

The three to 20-year rule is a continuously rolling target, so do be mindful of this as your trusty steed ages both into and out of the window.
The Emissions Inspection
This additional test was born from the Piedmont Triad's commitment to air quality. Simply, this is a non-visual test performed via the vehicle's onboard diagnostic system (OBD-II). The inspector connects a scanner to the OBD-II port to check the vehicle's computer for fault codes and to ensure the emissions control devices are operating correctly. The two most common reasons for failure are:
- A constant "Check Engine Light" being illuminated.
- The vehicle's computer has not completed all its internal system checks (known as "Not Ready" status).
What Happens if a Vehicle Fails the Emissions Test?
If your vehicle fails the OBD-II test, you have a few options:
- Repair and Reinspect: You have 60 days to have the necessary repairs completed, and if you return to the original station within the time limit, the re-inspection is often free and limited only to the items that failed.
- The Emissions Waiver: If you perform all necessary OBD-related repairs and spend over $200 (the current statutory amount for the waiver), but the vehicle still cannot pass the emissions test, you may apply for an Emissions Repair Waiver. This is granted by the NCDMV and allows you to register the vehicle for one year.
Ready to Roll?
Should you have any further questions we invite you to contact us for assistance, and if you’re ready for your inspection our friendly and knowledgeable team is ready to get you safely back out on the road. You can easily schedule your inspection now!