Trunk comparison: Audi A6 Avant vs VW Passat Wagon

Key Differences (Brief)

The most noticeable difference lies in the depth of the trunk (loading edge to trunk floor): the VW Passat Variant has +2.8 in or +350% here compared to the Audi A6 Avant.

All other deviations are small (between 1–8%): the Passat offers +2 in trunk length with folded seats, the A6 +1.6 in with the first row upright, the Passat's trunk opening is +2.4 in (8%) higher, and width/shoulder room differ by about ~0.4 in each. The loading edge height is the same.

Impact on Usability

The significantly greater depth in the Passat means a noticeably deeper cargo well: this increases the usable volume in the lower part of the trunk.

Practically, this means the Passat can better accommodate bulky or tall items, bags and boxes can be recessed deeper and stacked better, and delicate cargo lies further below the loading edge. For users who frequently transport bulky groceries, boxes, or luggage, this increases loading efficiency.

Since the loading edge height is the same in both models, the deeper cargo well does not change the ergonomics when lifting onto the loading edge — loading remains comparable.

However, storing and securing low-lying cargo in the Passat can be somewhat different (more depth, less direct view of the floor area) and may require different tie-down or cover solutions.

The smaller deviations (length differences with and without folded seats, opening height +2.4 in, width ±0.4 in) only marginally affect everyday usability.

Specifically: those transporting very long items with the rear bench upright have slightly more space in the Audi; those folding down the rear bench or benefiting from a slightly higher opening (e.g., suitcases with tall handles) have a slight advantage in the Passat.

For most users, these differences are not decisive.

Conclusion

If you often transport bulky or tall cargo and need more usable depth in the cargo area, the VW Passat Variant is the more practical choice due to the significantly deeper cargo well.

If your transports depend more on usable length with the bench upright, the Audi A6 Avant offers a small advantage. The other differences are minor and have little impact on everyday usability.