2012 BMW M3 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 2012 BMW M3 Convertible.

The 2012 BMW M3 Convertible has 2 model options: Manual 6-spd 8-cyl, 4.0 L and Automatic (S7) 8-cyl, 4.0 L.

The 2012 BMW M3 Convertible Manual 6-spd 8-cyl, 4.0 L runs on premium gasoline and is in the Subcompact Cars car class.

The 2012 BMW M3 Convertible Automatic (S7) 8-cyl, 4.0 L runs on premium gasoline and is in the Subcompact Cars car class.

🛣 How Many Miles per Gallon (MPG) Does a 2012 BMW M3 Convertible Get?

Across all models, the combined average MPG for the 2012 BMW M3 Convertible is 16 miles per gallon.

The table below breaks down the MPG for each model option:

Model OptionCombined MPGCity MPGHighway MPG
Manual 6-spd 8-cyl, 4.0 L161420
Automatic (S7) 8-cyl, 4.0 L161420

💵 What is the Average Yearly Fuel Cost for a 2012 BMW M3 Convertible?

The average fuel costs for all models of the 2012 BMW M3 Convertible is $4,600.

The average fuel costs have 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.

Comparing a 2012 BMW M3 Convertible to an average vehicle over 5 years, you will spend $11,500 more on fuel.

The table below shows the fuel costs and 5-year save/spend for each model option:

Model OptionFuel Cost5-Year Save/Spend
Manual 6-spd 8-cyl, 4.0 L$4,600spend $11,500 more
Automatic (S7) 8-cyl, 4.0 L$4,600spend $11,500 more

The 2012 BMW M3 Convertible is also subject to the Gas Guzzler Tax, which is a federal tax on vehicles that has a combined MPG of less than 22.5.

The tables below show how much you can expect to pay in Gas Guzzler taxes.

Model OptionGas Guzzler Tax
Manual 6-spd 8-cyl, 4.0 L$3,700
Model OptionGas Guzzler Tax
Automatic (S7) 8-cyl, 4.0 L$3,700

🛢 How Many Barrels of Petroleum Does a 2012 BMW M3 Convertible Consume?

Across all models, the average number barrels of petroleum that the 2012 BMW M3 Convertible will consume in one year is 19 barrels.

The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.

Model OptionBarrels
Manual 6-spd 8-cyl, 4.0 L19
Automatic (S7) 8-cyl, 4.0 L19

💨 How Many Grams of CO2 Does a 2012 BMW M3 Convertible Emit?

The 2012 BMW M3 Convertible will emit an average of about -15,000 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 1 tree would be needed to offset emissions from the 2012 BMW M3 Convertible.

Overview

The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 2 2012 BMW M3 Convertible model options.

Manual 6-spd 8-cyl, 4.0 L

The table below contains all of the details we have for the 2012 BMW M3 Convertible Manual 6-spd 8-cyl, 4.0 L:

City MPG14
Highway MPG20
Combined MPG16
Save/Spend vs Average CarSpend $11,500
Gas Guzzler Tax$3,700
Fuel Cost$4,600
Fuel Type 1Premium
Barrels of Petroleum19
Grams of CO2-15,000
Trees Needed to Offset-1
DriveRear-Wheel Drive
Cylinders8
Displacement4
TransmissionManual 6-spd
Vehicle ClassSubcompact Cars
Start/Stop?No
Supercharged?No
Turbocharged?No

Automatic (S7) 8-cyl, 4.0 L

The table below contains all of the details we have for the 2012 BMW M3 Convertible Automatic (S7) 8-cyl, 4.0 L:

City MPG14
Highway MPG20
Combined MPG16
Save/Spend vs Average CarSpend $11,500
Gas Guzzler Tax$3,700
Fuel Cost$4,600
Fuel Type 1Premium
Barrels of Petroleum19
Grams of CO2-15,000
Trees Needed to Offset-1
DriveRear-Wheel Drive
Cylinders8
Displacement4
TransmissionAutomatic (S7)
Vehicle ClassSubcompact Cars
Start/Stop?No
Supercharged?No
Turbocharged?No

Link To or Reference This Page

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

  • "2012 BMW M3 Convertible MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/bmw/m3-convertible/2012.

  • "2012 BMW M3 Convertible MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/bmw/m3-convertible/2012. Accessed January 3, 2026.

  • 2012 BMW M3 Convertible MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/bmw/m3-convertible/2012.