Fourth generation (F70, 2024-present) · Premium family hatchback
The BMW 1 Series (F70) has a 380 L boot behind the rear seats, growing to 1200 L with them folded. Most owners size an organiser to the visible floor and stop there, missing the model's two-level boot floor, so measure the depth at both levels before you choose a rigid design.
The BMW 3 Series has 480 L of boot on the Saloon, but the 330e plug-in hybrid gives up about 105 L to its battery pack on the Saloon and 125 L on the Touring. Organisers and mats sized to the pure-ICE figures overhang the shallower hybrid well, so choose by powertrain first and by body second.
Three products we would look at first in this category. Fit for your BMW still comes first: check the compatibility list on the listing against your exact model and year, and read the model guide above.