Based on data from 11 vehicles, 386 fuel-ups and 64,434 miles of driving, the 2021 BMW R1250GS gets a combined Avg MPG of 45.54 with a 0.46 MPG margin of error. Below you can see a distribution of the fuel-ups with 28 outliers (6.76%) removed. Following shows the average MPG of each of the 11 vehicles in the system. 8XSWrck.