Really? How do you know this? There's no gauge to show mpg..... I worked it out using: 367km = 228 miles (using 1mile - 1.609km) Fuel was measured in Litres on refill = 20.7 1 gallon = 4.54609 litres, therefore 20.7 litres = 4.55 Gallons 228 miles on 4.55 gallons = 50.xx mpg. How do you get to 100mpg?