The fuel economy or gas mileage of 2023 BMW 3 Series variants, as measured by EPA, is given below in terms of miles per gallon (mpg):
|2023 BMW 3 Series Variants||City MPG||Highway MPG||Combined MPG|
|2023 BMW M340i Sedan 6 cylinder, 3.0 L, Automatic (S8)||23||31||26|
|2023 BMW M340i xDrive Sedan 6 cylinder, 3.0 L, Automatic (S8)||23||32||26|
This model ranges from 23 mpg to 32 mpg in standard test conditions, as per EPA. However, this mileage will vary based on various factors including your driving style, road conditions and vehicle condition. 2023 BMW 3 Series comes with fuel tank capacity of 15.6 gallons. With this fuel tank capacity, most efficient variant can run up to 499.2 miles in highway condition when tank is full.