BMW 320i MPG and Fuel Economy

BMW have been manufacturing models of 320i for 6 years, with the latest vehicle in 2018 having a combined MPG of 28.

The estimated fuel cost for the 2018 BMW 320i is $2,650 per year.

Government regulators have estimated that value based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.

💵 Compared to an average vehicle over 5 years, you will spend $1,750 more on fuel driving a 2018 BMW 320i.

🛢 The BMW 320i will consume roughly 11 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.

💨 For every mile driven, the BMW 320i will emit 323 grams of CO2, which is about 4,845,000 grams of CO2 per year.

🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 231 trees would be needed to offset emissions from the BMW 320i.

The table below is a complete list of the 6 BMW 320i fuel efficiency specifications we have data for.

Click any vehicle link to see a more detailed breakdown of the car, miles per gallon, emissions, and more.

VehicleCombined MPGFuel Cost
2018 BMW 320i28$2,650
2017 BMW 320i28$2,650
2016 BMW 320i27$2,750
2015 BMW 320i28$2,650
2014 BMW 320i28$2,650
2013 BMW 320i27$2,750

Link To or Reference This Page

If you use this page in your research, please reference MPG Buddy as the source.

  • "BMW 320i MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/bmw/320i.

  • "BMW 320i MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/bmw/320i. Accessed January 3, 2026.

  • BMW 320i MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/bmw/320i.