Emissions Testing Required for Vehicles Registered in Milwaukee, WI

Yes. Milwaukee County is part of the Wisconsin Vehicle Inspection Program (VIP), which mandates biennial emissions tests for:

• Gasoline vehicles 1996–2006 (OBDII) and 2007+ (enhanced OBD).
• Diesel vehicles 2007+ (OBD).
• Model years 1968–1995 (tailpipe test) in some counties.

Exemptions: new vehicles (first 3 years), electric, motorcycles, pre-1968, collectibles. Failures require repair and retest. Tests at certified stations (~$15–$20).