2021 BMW 840i Convertible MPG and Fuel Economy
On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 2021 BMW 840i Convertible.
The 2021 BMW 840i Convertible runs on premium gasoline and is in the Subcompact Cars car class.
Whether you are considering a purchase of the car, or just wanting to find out how economical and environmentally friendly (or un-friendly) your 2021 BMW 840i Convertible is, we have the information you need.
🛣 How Many Miles per Gallon (MPG) Does a 2021 BMW 840i Convertible Get?
First off, the most commonly asked question. A 2021 BMW 840i Convertible gets up to 22 miles per gallon in the city, and 29 miles per gallon on the highway.
The combined average MPG for the 2021 BMW 840i Convertible is 25 miles per gallon.
💵 What is the Average Yearly Fuel Cost for a 2021 BMW 840i Convertible?
The estimated fuel costs for the 2021 BMW 840i Convertible is $2,950 per year.
That value has been estimated by government regulators based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.
If you were to compare a 2021 BMW 840i Convertible to an average vehicle over 5 years, you will spend $3,250 more on fuel.
🛢 How Many Barrels of Petroleum Does a 2021 BMW 840i Convertible Consume?
The 2021 BMW 840i Convertible will consume roughly 12 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.
The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.
💨 How Many Grams of CO2 Does a 2021 BMW 840i Convertible Emit?
For every mile driven, the 2021 BMW 840i Convertible will emit 360 grams of CO2, which is about 5,400,000 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 184 trees would be needed to offset emissions from the 2021 BMW 840i Convertible.
The table below covers all of the miles per gallon, engine specifications, and emission details we have for the 2021 BMW 840i Convertible.
|Save/Spend vs Average Car||Spend $3,250|
|Fuel Type 1||Premium|
|Barrels of Petroleum||12|
|Grams of CO2||5,400,000|
|Trees Needed to Offset||257|
|Vehicle Class||Subcompact Cars|
Related BMW Models from 2021
If you're interested in other BMW models from 2021, you can find them in the table below. You can click the model link to find miles per gallon and emission information for that model.
|M850i xDrive Convertible||19|
|M240i xDrive Coupe||24|
|M850i xDrive Gran Coupe||19|
|M8 Competition Convertible||17|
|840i xDrive Convertible||23|
|840i xDrive Coupe||23|
Ratings were provided by the manufacturer to the U.S. Department of Energy, which is where we sourced the data. Be advised that manufacturers may have upgraded, downgraded, or changed these ratings following the compilation of this data.
MPG Buddy does not guarantee the accuracy of this data, nor are we liable for any decisions made by referencing this data. Make sure to contact the specific car manufacturer to confirm accuracy.
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"2021 BMW 840i Convertible MPG and Fuel Economy". MPG Buddy. Accessed on November 29, 2022. http://mpgbuddy.com/cars/bmw/840i-convertible/2021.
"2021 BMW 840i Convertible MPG and Fuel Economy". MPG Buddy, http://mpgbuddy.com/cars/bmw/840i-convertible/2021. Accessed 29 November, 2022
2021 BMW 840i Convertible MPG and Fuel Economy. MPG Buddy. Retrieved from http://mpgbuddy.com/cars/bmw/840i-convertible/2021.