Abstract: In recent years, fog-haze weather is frequently encountered in most areas of China, which has seriously affected the lives and health of Chinese citizens. The control on the fog and haze pollution is extremely urgent. In this contribution, the author first outlines the harms of the fog and haze, then introduces the relationship between PM2.5, the principal contributor to the fog and haze pollution, and automobile exhaust, and finally describes the GARDES technology for clean gasoline production, with the aim of making the public understand the relationship between motor emission and petrol quality.