Wisconsin
For Wisconsin, counties where testing is required is seven counties in Southeast Wisconsin: Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington and Waukesha, verified against its source on 2026-08-19.
- State
- Wisconsin our reading
- Counties where testing is required
- seven counties in Southeast Wisconsin: Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington and Waukesha verified
- Vehicles covered / exempt
- Vehicles more than five model years old are required to be inspected upon change of ownership per wisconsinvip2.org
- Program / authority
- Wisconsin Vehicle Inspection Program per wisconsinvip2.org
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
Vehicle emissions testing is required in seven counties in Southeast Wisconsin: Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington and Waukesha. This Clean Air Act program is implemented specifically to help those counties attain and maintain the National Ambient Air Quality Standards for ozone but it has the additional benefit of reducing other harmful air pollutants in those areas.
— dnr.wisconsin.gov, retrieved 2026-08-19
What wisconsinvip2.org says
Vehicles more than five model years old are required to be inspected upon change of ownership. Motorists receive notice of the emission-testing requirement after they have titled and registered the vehicle. Failure to complete the emission requirement within the allotted 45-day time period will result in the suspension of the newly purchased vehicle's registration.
— wisconsinvip2.org, retrieved 2026-08-19
Sources
- dnr.wisconsin.govhttps://dnr.wisconsin.gov/topic/AirQuality/Mobile.html
- wisconsinvip2.orghttps://www.wisconsinvip2.org/Content/FAQ