Does South Dakota Have Emissions Testing?

No, South Dakota does not require emissions testing. The state has never implemented a vehicle emissions testing program for passenger vehicles.

South Dakota's Emissions Testing Policy

South Dakota law does not require emissions testing of motor vehicles. According to the South Dakota Department of Revenue Motor Vehicle Division, the state registers passenger automobiles without emission or safety certification requirements.

Why South Dakota Doesn't Require Emissions Testing

South Dakota is one of only seven states in the nation with no nonattainment areas for EPA air quality standards.

The Clean Air Act requires geographical areas that exceed federally designated air quality thresholds to implement vehicle Inspection and Maintenance (I/M) programs for emissions testing. However, South Dakota's ambient air quality meets all National Ambient Air Quality Standards for criteria pollutants, including particulate matter, ozone, sulfur dioxide, nitrogen dioxide, carbon monoxide, and lead.