2018 BMW M3 MPG and Fuel Economy

On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 2018 BMW M3.

The 2018 BMW M3 has 2 model options: Manual 6-spd 6-cyl, 3.0 L and Automatic (AM-S7) 6-cyl, 3.0 L.

The 2018 BMW M3 Manual 6-spd 6-cyl, 3.0 L runs on premium gasoline and is in the Compact Cars car class.

The 2018 BMW M3 Automatic (AM-S7) 6-cyl, 3.0 L runs on premium gasoline and is in the Compact Cars car class.

🛣 How Many Miles per Gallon (MPG) Does a 2018 BMW M3 Get?

Across all models, the combined average MPG for the 2018 BMW M3 is 20 miles per gallon.

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

Model OptionCombined MPGCity MPGHighway MPG
Manual 6-spd 6-cyl, 3.0 L201725
Automatic (AM-S7) 6-cyl, 3.0 L201724

💵 What is the Average Yearly Fuel Cost for a 2018 BMW M3?

The average fuel costs for all models of the 2018 BMW M3 is $3,700.

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 2018 BMW M3 to an average vehicle over 5 years, you will spend $7,000 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 6-cyl, 3.0 L$3,700spend $7,000 more
Automatic (AM-S7) 6-cyl, 3.0 L$3,700spend $7,000 more

🛢 How Many Barrels of Petroleum Does a 2018 BMW M3 Consume?

Across all models, the average number barrels of petroleum that the 2018 BMW M3 will consume in one year is 15 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 6-cyl, 3.0 L15
Automatic (AM-S7) 6-cyl, 3.0 L15

💨 How Many Grams of CO2 Does a 2018 BMW M3 Emit?

The 2018 BMW M3 will emit an average of about 6,667,500 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 228 trees would be needed to offset emissions from the 2018 BMW M3.

Overview

The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 2 2018 BMW M3 model options.

Manual 6-spd 6-cyl, 3.0 L

The table below contains all of the details we have for the 2018 BMW M3 Manual 6-spd 6-cyl, 3.0 L:

City MPG17
Highway MPG25
Combined MPG20
Save/Spend vs Average CarSpend $7,000
Fuel Cost$3,700
Fuel Type 1Premium
Barrels of Petroleum15
Grams of CO26,585,000
Trees Needed to Offset314
DriveRear-Wheel Drive
Cylinders6
Displacement3
TransmissionManual 6-spd
Vehicle ClassCompact Cars
Start/Stop?Yes
Supercharged?No
Turbocharged?Yes

Automatic (AM-S7) 6-cyl, 3.0 L

The table below contains all of the details we have for the 2018 BMW M3 Automatic (AM-S7) 6-cyl, 3.0 L:

City MPG17
Highway MPG24
Combined MPG20
Save/Spend vs Average CarSpend $7,000
Fuel Cost$3,700
Fuel Type 1Premium
Barrels of Petroleum15
Grams of CO26,750,000
Trees Needed to Offset321
DriveRear-Wheel Drive
Cylinders6
Displacement3
TransmissionAutomatic (AM-S7)
Vehicle ClassCompact Cars
Start/Stop?Yes
Supercharged?No
Turbocharged?Yes

Link To or Reference This Page

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

  • "2018 BMW M3 MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/bmw/m3/2018.

  • "2018 BMW M3 MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/bmw/m3/2018. Accessed January 3, 2026.

  • 2018 BMW M3 MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/bmw/m3/2018.