Trunk comparison: Audi A6 Sedan vs BMW 3 Series Touring

Key Differences (highlighted: >10%)

The Audi A6 offers a longer cargo floor length when the seats are folded down: +7.9 in (11%) compared to the BMW 3 Series Touring. Even with the front seats upright, the Audi has a clear advantage: +5.9 in (15%) trunk length.

The trunk opening of the BMW, however, is significantly higher: +8.7 in (44%) above that of the Audi, which means more vertical loading height at the filler neck.

Particularly striking is the measured depth between the loading edge and trunk floor in favor of the Audi: +4.3 in (1100%), meaning significantly more usable vertical space in the trunk.

Impact on Usability

The longer trunk length of the Audi (both with folded seats and upright front seats) makes it better suited for long items such as skis, furniture boards, or longer luggage. In many everyday situations, this means more flexibility when transporting bulky, lengthwise-oriented loads.

The greater depth (loading edge → trunk floor) in the Audi creates more vertical storage space inside the trunk. This allows for better stacking and more usable height under the loading edge – advantageous for boxes or tall cargo that must remain standing inside the trunk.

The BMW scores points with the trunk opening: The significantly higher opening makes it easier to load tall or bulky items because more loading height is available. Together with the slightly lower loading edge (BMW lower than Audi), this reduces the effort needed to lift bulky loads inside.

Width differences and the 2.4 in higher loading edge of the Audi (10%) are comparatively small and affect everyday usability less noticeably: the narrowest width is slightly larger in the Audi, the opening width is slightly larger in the BMW — both minor aspects compared to length, depth, and opening height.

In short: For lengthwise-oriented or stackable cargo, the Audi A6 is the more practical choice; for tall, bulky cargo and easier loading, the BMW 3 Series Touring offers advantages.