2018 BMW 330i 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 330i.

The 2018 BMW 330i has 2 model options: Automatic (S8) 4-cyl, 2.0 L and Manual 6-spd 4-cyl, 2.0 L.

The 2018 BMW 330i Automatic (S8) 4-cyl, 2.0 L runs on premium gasoline and is in the Compact Cars car class.

The 2018 BMW 330i Manual 6-spd 4-cyl, 2.0 L runs on premium gasoline and is in the Compact Cars car class.

🛣 How Many Miles per Gallon (MPG) Does a 2018 BMW 330i Get?

Across all models, the combined average MPG for the 2018 BMW 330i is 26 miles per gallon.

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

Model OptionCombined MPGCity MPGHighway MPG
Automatic (S8) 4-cyl, 2.0 L272434
Manual 6-spd 4-cyl, 2.0 L252132

💵 What is the Average Yearly Fuel Cost for a 2018 BMW 330i?

The average fuel costs for all models of the 2018 BMW 330i is $2,850.

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 330i to an average vehicle over 5 years, you will spend $2,750 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
Automatic (S8) 4-cyl, 2.0 L$2,750spend $2,250 more
Manual 6-spd 4-cyl, 2.0 L$2,950spend $3,250 more

🛢 How Many Barrels of Petroleum Does a 2018 BMW 330i Consume?

Across all models, the average number barrels of petroleum that the 2018 BMW 330i will consume in one year is 12 barrels.

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

Model OptionBarrels
Automatic (S8) 4-cyl, 2.0 L11
Manual 6-spd 4-cyl, 2.0 L12

💨 How Many Grams of CO2 Does a 2018 BMW 330i Emit?

The 2018 BMW 330i will emit an average of about 5,130,000 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 175 trees would be needed to offset emissions from the 2018 BMW 330i.

Overview

The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 2 2018 BMW 330i model options.

Automatic (S8) 4-cyl, 2.0 L

The table below contains all of the details we have for the 2018 BMW 330i Automatic (S8) 4-cyl, 2.0 L:

City MPG24
Highway MPG34
Combined MPG27
Save/Spend vs Average CarSpend $2,250
Fuel Cost$2,750
Fuel Type 1Premium
Barrels of Petroleum11
Grams of CO24,860,000
Trees Needed to Offset231
DriveRear-Wheel Drive
Cylinders4
Displacement2
TransmissionAutomatic (S8)
Vehicle ClassCompact Cars
Start/Stop?Yes
Supercharged?No
Turbocharged?Yes

Manual 6-spd 4-cyl, 2.0 L

The table below contains all of the details we have for the 2018 BMW 330i Manual 6-spd 4-cyl, 2.0 L:

City MPG21
Highway MPG32
Combined MPG25
Save/Spend vs Average CarSpend $3,250
Fuel Cost$2,950
Fuel Type 1Premium
Barrels of Petroleum12
Grams of CO25,400,000
Trees Needed to Offset257
DriveRear-Wheel Drive
Cylinders4
Displacement2
TransmissionManual 6-spd
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 330i MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/bmw/330i/2018.

  • "2018 BMW 330i MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/bmw/330i/2018. Accessed January 3, 2026.

  • 2018 BMW 330i MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/bmw/330i/2018.