The 25 Counties Requiring Emissions Testing
Pennsylvania's emissions testing program focuses on the state's most populous urban and suburban areas.
Philadelphia Metropolitan Area (5 Counties)
- Bucks County - Levittown, Bensalem, Bristol
- Chester County - West Chester, Coatesville
- Delaware County - Upper Darby, Chester
- Montgomery County - Norristown, Cheltenham
- Philadelphia County - City of Philadelphia
Pittsburgh Metropolitan Area (4 Counties)
- Allegheny County - Pittsburgh, Penn Hills
- Beaver County - Aliquippa, Beaver Falls
- Washington County - Washington, Canonsburg
- Westmoreland County - Greensburg, Latrobe
Other Metropolitan Counties (16 Counties)
- Berks, Blair, Cambria, Centre, Cumberland, Dauphin
- Erie, Lackawanna, Lancaster, Lehigh, Luzerne, Lycoming
- Mercer, Northampton, York
Why These Counties Were Selected
Selection criteria included:
- Population density
- Historical air quality issues
- Ozone levels from vehicle emissions
- Metropolitan Statistical Areas with commuter traffic
Which Vehicles Are Exempt?
- Vehicles less than 5 years old
- Vehicles 25+ years old (classic/antique)
- Vehicles over 8,500 lbs gross weight
- Motorcycles and electric vehicles
Moving Between Counties
Requirements are based on where your vehicle is registered, not where you get it inspected. Moving to an emissions county means you'll need testing at your next inspection.