The minimum mileage, or fuel efficiency, of a Royal Enfield Thunderbird 350 can vary depending on several factors such as riding conditions, maintenance, and riding style. On average, the Thunderbird 350 can deliver a mileage of around 35-40 kilometers per liter (km/l) of fuel, or approximately 82-94 miles per gallon (mpg).
It's important to note that these figures are approximate and can vary based on various factors, including traffic conditions, terrain, and individual riding habits. Additionally, newer models or models with specific updates or modifications may have different mileage figures.
To get the best mileage out of your Thunderbird 350, it is recommended to ride at consistent speeds, avoid sudden accelerations or decelerations, maintain the bike regularly, and ensure that the tires are properly inflated.