Trunk comparison: Audi A6 Avant vs Opel Corsa

Key Differences
The Audi A6 Avant offers significantly more cargo length than the Opel Corsa: with the seats folded down, the trunk of the A6 is 25.2 in or +48% longer, and with the first row of seats upright, it is even 20.1 in or +77% larger.
The width of the trunk opening of the A6 is 7.1 in or +21% wider than that of the Corsa. In contrast, the depth (distance from loading edge to trunk floor) of the Opel Corsa is 6.3 in or +800% higher than that of the A6. The height of the trunk opening is the same for both models.
Implications for Usability
The longer cargo areas and wider opening of the A6 Avant make it significantly more practical for long or bulky loads (e.g., slats, furniture parts, long boxes) and simplify loading and unloading wide items. Additionally, the lower loading edge height of the A6 makes lifting heavy loads inside easier.
The deeper trunk floor of the Opel Corsa creates more vertical space between the loading edge and floor, which can help when stacking tall items inside.
At the same time, the loading edge of the Corsa is somewhat higher above the ground (+2.4 in or +9%), which complicates handling heavy loads. The similar opening height of both models and the only slightly larger narrowest width of the A6 (+4% or +1.6 in) are less decisive in practice.
In summary: For transporting long or wide items, the Audi A6 Avant is the better choice; for smaller, tall, or stacked loads, the Opel Corsa offers some advantage due to its deeper floor but suffers from a higher loading edge when loading and unloading.