To improve the mileage of the Bajaj Pulsar 125, several strategies can be employed. First, ride at a moderate speed, as riding fast can reduce fuel efficiency by up to 33%. Practicing judicious throttle modulation and limiting excessive gearshifts can also help. Turning off the engine while idling in traffic is another effective method. Additionally, using high-quality engine oil, such as Mobil 5100, and ensuring regular maintenance, including timely servicing and cleaning the bike, can enhance fuel efficiency. Avoiding overloading the bike and maintaining optimal tire pressure are also crucial. The Bajaj Pulsar 125 has a user-reported mileage of 50 kmpl, and by following these tips, you can potentially achieve or even exceed this figure.