The BMW 340i has 25 cu ft of cargo space. In practice that is 4 checked suitcases, or 12 carry-ons, or about 20 supermarket bags. A folded pushchair fits. Against 49 cars with a similar-sized cabin it sits above the average of 23.5 cu ft.
What actually fits in a 340i
Cubic feet are an abstraction — 25 cu ft means nothing until you load it. Here is the same number in things people actually load, 4 checked cases or 12 carry-ons for the BMW 340i, with a packing allowance — a boot is not a cube, and corners go to waste.
| What you are loading | How many fit | Each item |
|---|---|---|
| Checked suitcases | 4 | 27 × 21 × 14″ — 4.6 cu ft |
| Carry-on cases | 12 | 22 × 14 × 9″ — 1.6 cu ft |
| Supermarket bags | 20 | about 1 cu ft each |
| Golf bags | 4 | full set, about 5 cu ft |
| Folded pushchair | Fits | about 6 cu ft |
Counts assume 80% usable volume: luggage does not tessellate, and a wheel arch eats the rest.
Cabin or boot — where the space went
Every car is a fixed envelope, and designers decide how to split it between people and things — the BMW 340i gives 19.7% of its 127 cu ft to luggage. The share below is the honest way to compare an estate with a coupé of the same footprint, and among 49 cars with a cabin within eight cubic feet of the BMW 340i the boot averages 23.5 cu ft.
| Space | Volume | Share of total |
|---|---|---|
| Passenger cabin | 102 cu ft | |
| Cargo area | 25 cu ft | |
| Total interior | 127 cu ft |
A typical split for a family car: room for people first, luggage second.
Against cars with a similar cabin
Compared with 49 models whose passenger space is within eight cubic feet — a fairer group than marketing classes, which put an estate and a coupé in the same bracket.
| Measure | This car | Similar cars | Difference |
|---|---|---|---|
| Cargo volume | 25 cu ft | 23.5 cu ft | +1.5 cu ft |
| In checked suitcases | 4 | 4 | +0 |
Cars with the same room
Closest matches by load volume with the seats folded — useful when the boot is the deciding factor and the badge is not. The BMW 340i sits at 25 cu ft, so these are the cars that carry the same load.
| Car | Load volume | vs BMW 340i | Checked suitcases | Measured |
|---|---|---|---|---|
| BMW 328i | 0 cu ft | 4 | 2016 | |
| BMW 335i | 0 cu ft | 4 | 2016 | |
| Audi A7 | 0 cu ft | 4 | 2025 | |
| Hyundai Elantra GT | 0 cu ft | 4 | 2020 | |
| Nissan Kicks | 0 cu ft | 4 | 2024 | |
| Nissan Kicks Play | 0 cu ft | 4 | 2025 |
Boot space is one number. Buying is a longer list.
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How we count
Cargo and passenger volumes come from EPA interior-volume records — the same figures manufacturers file for the window sticker, measured to a standard method rather than claimed in a brochure.
The luggage counts are ours — 4 checked cases for the BMW 340i come out of its 25 cu ft. We assume 80% usable volume, because a boot is not a cube: wheel arches, a sloping tailgate and the shape of the cases themselves waste the rest, which is why the BMW 340i counts as 20 cu ft of usable space rather than 25. Suitcase sizes are the airline standards — 22 × 14 × 9″ for carry-on, 27 × 21 × 14″ for checked, so the BMW 340i takes 12 of the small ones. Numbers are deliberately conservative; if we say four cases fit, four cases fit.
Frequently asked questions
How much cargo space does the BMW 340i have?
25 cu ft behind the rear seats, plus 102 cu ft of passenger cabin.
How many suitcases fit in a 340i?
About 4 checked cases (27 × 21 × 14″) or 12 carry-ons, allowing for the fact that a boot is not a perfect cube.
Will a pushchair fit in a 340i?
Yes — a folded pushchair takes roughly 6 cu ft and this car has 25, so it fits with room for shopping.
Is that a lot for this size of car?
Compared with 49 cars of a similar cabin size, it is above the average of 23.5 cu ft.
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