Trunk comparison: Audi A6 Sedan vs Ford Focus

Main Differences
The Audi A6 offers significantly more loading length: with the seats folded down, the trunk is 15.7 in (26%) longer than the Ford Focus, and with the front seat row upright, it is even 15 in (49%) longer.
In contrast, the Ford Focus has a higher trunk opening and more loading height inside: the trunk opening is 11.8 in (60%) higher than the A6, and the depth from the loading edge level to the trunk floor is 2.4 in (50%) greater.
Smaller differences — loading edge height +1.2 in (5%) in the Focus, narrowest width +0.4 in (1%) in the A6, opening width +2.4 in (6%) in the Focus — are proportionally minor and have little practical impact.
Implications for Usability
The greater loading length of the Audi A6 makes it clearly more suitable for long items: furniture parts, long pipes, skis, or planks are easier to transport, especially when the rear seats are folded down.
Those who regularly transport long or flat cargo benefit from the A6 due to a better, flatter loading path and more usable length.
The Ford Focus is advantageous for tall or bulky cargo: the higher trunk opening facilitates loading and unloading tall items and makes loading bulky boxes or crates more comfortable.
The greater depth (loading edge → floor) provides more interior height behind the loading edge, which favors stacking or accommodating taller items.
For everyday users, the small differences in width and loading edge height are hardly relevant. The decisive factor is the intended use: frequent long loads → Audi A6; frequent tall or bulky loads and more comfortable head and shoulder clearance when loading → Ford Focus.