The Bajaj Pulsar NS200 BS6 2021 model has an approximate mileage of around 35-40 kilometers per liter. However, it's important to note that the actual mileage can vary depending on various factors such as riding conditions, maintenance, riding style, and road conditions. It's always a good idea to refer to the manufacturer's specifications and consult with the authorized dealers for the most accurate and up-to-date information regarding the mileage of a specific motorcycle model.