BMW 840i Convertible MPG and Fuel Economy

BMW have been manufacturing models of 840i Convertible for 4 years, with the latest vehicle in 2023 having a combined MPG of 24.

The estimated fuel cost for the 2023 BMW 840i Convertible is $3,100 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 $4,000 more on fuel driving a 2023 BMW 840i Convertible.

🛢 The BMW 840i Convertible will consume roughly 12 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.

💨 For every mile driven, the BMW 840i Convertible will emit 374 grams of CO2, which is about 5,610,000 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 268 trees would be needed to offset emissions from the BMW 840i Convertible.

The table below is a complete list of the 4 BMW 840i Convertible 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.

Vehicle Combined MPG Fuel Cost
2023 BMW 840i Convertible 24 $3,100
2022 BMW 840i Convertible 25 $2,950
2021 BMW 840i Convertible 25 $2,950
2020 BMW 840i Convertible 24 $3,100

Link To or Reference This Page

We spend a lot of time collecting, cleaning, merging, and formatting the data that is shown on the site to be as useful to you as possible.

If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference MPG Buddy as the source. We appreciate your support!

  • "BMW 840i Convertible MPG and Fuel Economy". MPG Buddy. Accessed on July 19, 2024.

  • "BMW 840i Convertible MPG and Fuel Economy". MPG Buddy, Accessed 19 July, 2024

  • BMW 840i Convertible MPG and Fuel Economy. MPG Buddy. Retrieved from