To improve the mileage of the Benelli TNT 600, it is crucial to practice several driving techniques. Judiciously modulating the throttle to avoid sudden accelerations, limiting excessive gearshifts, and turning off the engine while idling in traffic can significantly enhance fuel efficiency. Additionally, maintaining the bike properly, such as changing the oil regularly and ensuring the chain kit is in good condition, can also contribute to better mileage. Owners have reported an average mileage of around 20 kmpl, and following these practices can help achieve or even exceed this figure.