Trunk comparison: Audi A6 Avant vs Fiat Panda

Key Differences
The Audi A6 Avant offers significantly more cargo length: With the seats folded down, the trunk of the A6 Avant is +33.5 in (≈77%) longer, and with the first row upright, even +24.8 in (≈117%) longer — more than twice as long as the Fiat Panda.
This makes the A6 much better suited for long items like slatted frames, long packages, or sports equipment.
The Fiat Panda has a significantly higher trunk opening: The opening height of the Panda is +5.9 in (≈21%) larger. This makes loading tall or bulky items easier, which can be problematic in the Audi due to the lower opening height.
The trunk floor of the Panda sits lower relative to the loading edge: The depth (loading edge to trunk floor) is +6.3 in (≈800%) greater in the Panda.
Practically, this means the loading floor in the Panda sits deeper below the loading edge, creating more "recess" in the cargo area, but combined with the higher loading edge, it can also make lifting heavy items more difficult.
What impact do these differences have on usability?
For transporting long or flat items, the Audi A6 Avant is the better choice: the significantly greater cargo length (both with folded seats and with the rear bench upright) allows loading long parts without complicated folding or external carriers.
Those who frequently transport tall, bulky, or voluminous items (e.g., boxes, tall crates, or furniture in an upright position) benefit from the Fiat Panda due to the higher opening height.
The greater recess in the Panda's trunk can also help secure bulky cargo more safely, but increases physical strain when lifting over the loading edge because the loading edge itself is higher.
In short: Audi A6 Avant = clear advantages in length and transporting long/heavy cargo. Fiat Panda = advantages in vertical loading and deeper trunk floor, but potentially higher physical strain when loading and unloading due to the higher loading edge.