BMW 3 Series Gran Turismo M340i vs BMW 120i — full comparison

BMW 3 Series Gran Turismo M340i

Hatchback · Gasoline · FWD

vs

BMW 120i

Hatchback · Gasoline · FWD

BMW 3 Series Gran Turismo M340i

Car A

BMW 3 Series Gran Turismo M340i

A rapid 5-seat hatchback that blends strong performance with everyday practicality and good value in its segment. Best for families who want speed and road-trip ease, less ideal for cargo-heavy or winter-focused use.

5 seatsHatchbackGasoline5-star safety374 hp

BMW 120i

Car B

BMW 120i

The BMW 120i is a compact FWD hatchback that blends quick acceleration with efficient consumption and strong reliability and safety signals. Ideal for city use and small families, but limited for cargo-heavy routines and demanding winter conditions.

5 seatsHatchbackGasoline5-star safety5.5 L/100km

Why compared same body typesame powertrainsame seatssame usage profile

Usage fit

Family 58 / 64

City 40 / 60

Budget / value 37 / 67

Road trip 54 / 41

Performance 35 / 28

Cargo 28 / 21

Practical 39 / 53

Premium 60 / 45

Winter 30 / 26

Scores out of 100. Blue = BMW 3 Series Gran Turismo M340i · Orange = BMW 120i

Specs side-by-side

Spec BMW 3 Series Gran Turismo M340i BMW 120i

Values are representative — confirm for your market and trim.

Pros & cons

BMW 3 Series Gran Turismo M340i

Very quick acceleration (0–100 km/h in 4.4 s) from 374 hp for confident passing and merges
5-seat hatchback with a 500 L trunk suits growing families and road trips
8.1 L/100 km combined consumption is efficient for its class given the output
At $54,900, offers good value in its segment for the performance on tap
Gasoline-only powertrain with no electric driving range
Front-wheel drive may be less appealing for buyers prioritizing AWD winter traction
500 L cargo space can feel limited for cargo-heavy use versus larger wagons or SUVs
Price remains higher than non-performance family hatchbacks

BMW 120i

Strong reliability and safety signals for everyday peace of mind
Quick for its class (0–100 km/h in 6.1 s) for confident commuting and merging
Efficient for its class with a combined consumption of 5.5
Practical 5-seat hatchback with a 380 L trunk for daily family use
Need maximum cargo space; 380 L boot limits bulky items
Regularly drive in harsh winter conditions where extra traction is preferred
Prefer rear- or all-wheel-drive dynamics
Require a roomier cabin than a compact hatchback provides

Verdict

Pick BMW 3 Series Gran Turismo M340i if…

Efficiency & everyday ease

BMW 3 Series Gran Turismo M340i is the choice if fuel economy and city-friendly driving are your priority.

Pick BMW 120i if…

Performance & capability

BMW 120i is the choice if you want more power, speed, or all-weather capability.

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