To improve the mileage of the Hero Xtreme 160R 4V, focus on several key areas. Drive at a steady speed to maintain optimal engine performance. Ensure the tyre pressure is correctly maintained, as this can significantly impact fuel efficiency. Adjust the drive chain tension correctly to avoid any unnecessary drag. Regular servicing, including tuning the engine and maintaining the air filter, is crucial. Avoid keeping the clutch lever pressed or running the engine in low gear for extended periods. Also, switch off the engine during long halts and avoid raising the engine RPM during traffic stops. Keeping the air filter clean and avoiding adulterated fuel are additional measures to enhance mileage. These practices can help achieve the reported mileage of around 46-48 kmpl for the Xtreme 160R 4V[5).