Bmw X3 Mileage Per Gallon. Read parkers' expert advice for the bmw x3 running costs, mpg, fuel economy, how it performs compared to its rivals and more. View detailed gas mileage data for the 2019 bmw x3.
The fuel consumption of the bmw x3 is shown below in both mpg (miles per gallon) and km/l (kilometers per litre). Fuel economy of the 2021 bmw x3.