BMW M340i Gas Mileage (2020-2026)

The BMW M340i gas mileage is 26 to 30 miles per gallon as specified in our data below, organized by trim, option package, and model year.

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For example, the 2020 BMW M340i Base trim model has a combined gas mileage of 26 miles per gallon, while the 2025 BMW M340i Base has a combined gas mileage of 30 miles per gallon.

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In the city, the M340i gas mileage is 22 to 27 miles per gallon depending on the trim and model year.

On the highway, the M340i gas mileage is 30 to 33 miles per gallon depending on the trim and model year.

Note: The gas mileage shown for hybrid vehicles is the miles per gallon equivalent.

Check out the Gas Mileage specifications for other makes and models.

2026 BMW M340i Gas Mileage

The 2026 BMW M340i gas mileage is 29 miles per gallon combined.

In the city, the 2026 M340i gas mileage is from 26 to 27 miles per gallon, depending on the trim.

On the highway, the 2026 M340i gas mileage is 33 miles per gallon.

2025 BMW M340i Gas Mileage

The 2025 BMW M340i gas mileage is 30 miles per gallon combined.

In the city, the 2025 M340i gas mileage is from 26 to 27 miles per gallon, depending on the trim.

On the highway, the 2025 M340i gas mileage is 33 miles per gallon.

2024 BMW M340i Gas Mileage

The 2024 BMW M340i gas mileage is 27 miles per gallon combined.

In the city, the 2024 M340i gas mileage is 23 miles per gallon.

On the highway, the 2024 M340i gas mileage is 31 miles per gallon.

2023 BMW M340i Gas Mileage

Depending on trim level, the 2023 BMW M340i gas mileage is from 27 to 27.5 miles per gallon combined.

In the city, the 2023 M340i gas mileage is 23 miles per gallon.

On the highway, the 2023 M340i gas mileage is from 31 to 32 miles per gallon, depending on the trim.

2022 BMW M340i Gas Mileage

The 2022 BMW M340i gas mileage is 27.5 miles per gallon combined.

In the city, the 2022 M340i gas mileage is 23 miles per gallon.

On the highway, the 2022 M340i gas mileage is 32 miles per gallon.

2021 BMW M340i Gas Mileage

Depending on trim level, the 2021 BMW M340i gas mileage is from 26.5 to 27.5 miles per gallon combined.

In the city, the 2021 M340i gas mileage is from 22 to 23 miles per gallon, depending on the trim.

On the highway, the 2021 M340i gas mileage is from 31 to 32 miles per gallon, depending on the trim.

2020 BMW M340i Gas Mileage

The 2020 BMW M340i gas mileage is 26 miles per gallon combined.

In the city, the 2020 M340i gas mileage is 22 miles per gallon.

On the highway, the 2020 M340i gas mileage is 30 miles per gallon.