Trunk comparison: Audi Q7 vs BMW X4

Key Differences

The Audi Q7 offers a significantly greater usable length and a wider opening: with the seats folded down, the trunk of the Q7 is 12.2 in (18%) longer and with the first row of seats upright, 6.7 in (17%) longer than the BMW X4. Additionally, the width of the trunk opening on the Q7 is 7.1 in (17%) larger, which facilitates loading wider cargo.

In contrast, the BMW X4 has a significantly greater depth between the loading edge and the trunk floor: +3.1 in (700%) – meaning the floor lies considerably lower below the loading edge.

Impact on Usability

For transporting long or bulky items (e.g., furniture parts, long pipes, skis), the Audi Q7 has a clear advantage: the longer dimensions and larger opening width make loading easier and provide more space for fully loaded or diagonally placed items.

Even with a partially occupied vehicle (first row upright), the Q7 retains more cargo space.

The deeper trunk floor of the BMW X4, on the other hand, creates a larger “vertical niche” below the loading edge. This can be useful for sinking luggage deeper (better storage of smaller boxes, lower center of gravity) or storing bulky but low items out of sight/sealed.

Overall, however, the shorter length and narrower opening of the X4 limit the ability to conveniently load wide or very long items.

Small differences under 10%: The trunk opening of the Q7 is 2 in (7%) higher, the narrowest interior width in the Q7 is 3.1 in (8%) larger, and the loading edge of the X4 is only 0.4 in (1%) higher above the road – these values have only a moderate practical impact.

Conclusion: Those who regularly transport long or wide cargo benefit from the Audi Q7. Those who prefer a deeper loading well (concealed storage, lower center of gravity) and can manage with shorter/narrower loading logistics will find the BMW X4’s cargo space practical but less flexible.