Honda makes tremendous efforts to reduce the exhaust emissions from gasoline engines by reducing the levels of carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx) contained in exhaust emissions.

The United States, Canada and the European Union Emission regulations for exhaust emissions are becoming more stringent. The United States emission regulations also consider the limitation of evaporative emissions.

Honda offers a line-up of general purpose engines exceeding all exhaust and evaporative emission regulations.