Trunk comparison: Audi A6 Avant vs BMW X3

Key Differences

The Audi A6 Avant offers a significantly longer cargo space with the first row of seats upright: +8.7 in (23%) compared to the BMW X3. Also notable is the depth measurement (from the loading edge level to the trunk floor): the A6 is ahead by +0.8 in (100%) at the front — although the absolute difference is small, the relative value is very high.

The A6's advantage with folded seats is +7.1 in (10%) and just below the highlight threshold.

The BMW X3, on the other hand, has advantages in opening height and width: the trunk opening is +2.4 in (8%) higher, the narrowest width in the trunk is +3.9 in (10%) larger, and the width of the trunk opening is +3.1 in (8%) larger. The loading edge of the BMW sits +2.4 in (9%) higher above the road than the A6.

Impact on Usability

For long or elongated cargo (e.g., furniture, long boxes, skis), the A6 Avant is more practical in everyday use: the significantly longer cargo length with the first row upright (+8.7 in/23%) makes it better suited if you regularly transport long items without folding down seats.

The slightly greater depth from the loading edge level to the floor in the A6 (absolute +0.8 in, relatively significant) usually means a slightly lower load floor in practice and thus a bit more usable depth into the interior — this makes stacking easier and slightly lowers the cargo's center of gravity.

The BMW X3 scores with bulky, wide, or tall items: the greater width at the narrowest point and the wider opening make loading wide parts and larger luggage easier, and the +2.4 in higher opening height provides more space for maneuvering when lifting tall items in.

However, the loading edge in the X3 is higher (+2.4 in), which makes lifting heavy loads more difficult; the A6 has the advantage here with a lower entry height, making loading heavy items more comfortable.

In summary: Those who frequently transport longer items or prefer a lower load floor are better served by the Audi A6 Avant. Those who often load and unload wide or bulky parts and benefit from a larger opening width are better off with the BMW X3 — but must accept a higher loading edge.