2021 BMW M440i 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 M440i Convertible.

The 2021 BMW M440i Convertible has a 44V Li-Ion electric motor which is charged via standard charger.

All MPG estimates are "MPG equivalent". This is a conversion of electric energy consumption to a gasoline equivalent.

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 M440i Convertible is, we have the information you need.

🛣 How Many Miles per Gallon (MPG) Does a 2021 BMW M440i Convertible Get?

First off, the most commonly asked question. A 2021 BMW M440i Convertible gets up to 23 miles per gallon in the city, and 31 miles per gallon on the highway.

The combined average MPG for the 2021 BMW M440i Convertible is 26 miles per gallon.

💵 What is the Average Yearly Fuel Cost for a 2021 BMW M440i Convertible?

The estimated fuel costs for the 2021 BMW M440i Convertible is $2,850 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 M440i Convertible to an average vehicle over 5 years, you will spend $2,750 more on fuel.

🛢 How Many Barrels of Petroleum Does a 2021 BMW M440i Convertible Consume?

The 2021 BMW M440i Convertible will consume roughly 11 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 M440i Convertible Emit?

For every mile driven, the 2021 BMW M440i Convertible will emit 338 grams of CO2, which is about 5,070,000 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 173 trees would be needed to offset emissions from the 2021 BMW M440i Convertible.

Overview

The table below covers all of the miles per gallon, engine specifications, and emission details we have for the 2021 BMW M440i Convertible.

City MPG23
Highway MPG31
Combined MPG26
Save/Spend vs Average CarSpend $2,750
Fuel Cost$2,850
Fuel Type 1Premium
Electric Motor44V Li-Ion
ATV TypeHybrid
Barrels of Petroleum11
Grams of CO25,070,000
Trees Needed to Offset241
DriveRear-Wheel Drive
Cylinders6
Displacement3
TransmissionAutomatic (S8)
Vehicle ClassSubcompact Cars
Start/Stop?Yes
Supercharged?No
Turbocharged?Yes

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.

ModelCombined MPG
228i Gran Coupe28
228i xDrive Gran Coupe27
230i Convertible27
230i Coupe25
230i Coupe28
230i xDrive Convertible24
230i xDrive Coupe24
330e28
330e xDrive25
330i30
330i xDrive28
430i Convertible27
430i Coupe29
430i xDrive Coupe27
530e26
530e xDrive25
530i28
530i xDrive27
540i27
540i xDrive26

Link To or Reference This Page

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

  • "2021 BMW M440i Convertible MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/bmw/m440i-convertible/2021.

  • "2021 BMW M440i Convertible MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/bmw/m440i-convertible/2021. Accessed January 3, 2026.

  • 2021 BMW M440i Convertible MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/bmw/m440i-convertible/2021.