What are the WI emissions or smog check requirements for vehicle registration? Wisconsin

The state's smog check or emissions testing program only affects those whose vehicles are primarily kept in the following counties:

  • Kenosha
  • Milwaukee
  • Ozaukee
  • Racine
  • Sheboygan
  • Washington
  • Waukesha
Does this mean you? If so, keep reading to learn more about the program.

WI Smog or Emissions Inspection

Every two years, cars (powered by gas or alternative fuels) manufactured after 1995 that weigh fewer than 8,501 pounds face a smog check. Vehicles made after 2006 that run on diesel or weigh between 8,501 pounds and 14,000 pounds must also undergo inspection.

You'll be notified on your vehicle registration renewal card if your car needs the smog check. (You can check your car's emissions status on the DMV site.) If it does, take it to one of the nine inspection stations in southeastern Wisconsin. Just don't go on a Wednesday or Sunday, as the stations are closed on those days.

Keep in mind your car can complete the smog testing up to 180 days in advance of its registration renewal date, so there's no need to wait until right before the deadline.

Cars that can't pass the inspections by their registration renewal date face a suspended car registration. As the car owner, it's up to you to bring your car into compliance by completing the required repairs.

Need More Emissions Testing Info?

Call (414) 266-1080 or (800) 242-7510 to learn more about emissions testing or other register car issues.

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