Trunk comparison: Audi A6 Sedan vs Renault Clio

Key Differences
The Audi A6 offers significantly more loading length with the seats folded down: +24.8 in (48%) compared to the Renault Clio. Even with the first row of seats upright, the A6 is usable for longer items: +17.3 in (62%).
The Renault Clio has a significantly higher trunk opening vertically: +9.4 in (48%) compared to the A6. Additionally, the depth between the loading edge and the trunk floor is much greater in the Clio: +25.6 in (542%).
The loading edge of the Audi A6 sits significantly higher above the road: +16.5 in (175%) compared to the Clio. Width differences are negligible: the narrowest trunk width of the A6 is only +0.4 in (1%) larger, and the opening width of the Clio only +2.4 in (6%)—both under 10%.
Impact on Usability
The greater loading length of the Audi A6 makes it better suited for long items (e.g., slats, skis, furniture parts) and for cargo-intensive situations, especially when seats are folded down or longer items need to be loaded with upright seating.
The Renault Clio scores in handling bulky and heavy cargo: the higher trunk opening offers more vertical space for voluminous items, and the significantly lower loading edge height makes lifting heavy loads easier.
The large depth between the loading edge and floor also means more usable interior volume "below" the loading edge, which can be advantageous for stackable or tall cargo.
For users who frequently need to transport long items or large volume, the A6 is more practical. For users who often load heavy, tall, or awkward items (frequent loading and unloading, shopping, luggage), the Clio is more ergonomic due to the lower loading edge and higher opening.