Which engines are included in the California smog check exemption categories?

Gasoline two-stroke engines are included in the California smog check exemption categories because they typically have lower emissions than four-stroke engines and are less commonly used in applications that require a smog check. In California, the smog check program is designed to reduce air pollution, and as part of this initiative, certain types of engines that do not significantly contribute to emissions are exempted from the requirements.

This exemption helps to streamline the process for vehicles that are not major contributors to air quality issues, particularly older or less frequently used engines. The criteria for exemptions take into account factors such as engine type, age, and usage, allowing for a more targeted approach to emissions control.