Trunk comparison: Audi A3 Sportback vs Ford Focus Wagon

Key Differences
The Ford Focus Wagon offers noticeably more length in the cargo space: with the seats folded down, the trunk of the Focus is +13.8 in (23%) longer, and with the first row of seats upright, it is +10.6 in (35%) longer than the Audi A3 Sportback.
Additionally, the narrowest width of the trunk in the Focus is +5.5 in (14%) larger and the width of the trunk opening is +4.3 in (11%) larger than in the A3. In contrast, the Audi A3 Sportback has a significantly greater trunk depth (loading edge to trunk floor): according to specifications, this is +5.5 in (700%) higher than in the Focus.
Other Differences (less than 10%)
The height of the trunk opening is +2.4 in (8%) higher in the Audi than in the Focus, and the loading edge height above the road is +1.6 in (6%) higher in the Audi. These differences are less than 10%.
Impact on Usability
The greater length and wider opening of the Focus provide clear advantages when transporting long or bulky items (e.g., furniture, long sports equipment, large suitcases).
The additional interior length with folded seats and upright rear bench makes the Focus more flexible for larger loads and better suited for families, tradespeople, or frequent travelers who regularly need to transport longer items.
The wider narrowest point and larger opening width of the Focus make loading wide items easier and increase the likelihood that bulky objects will fit without complicated turning or stowing.
The significantly greater trunk depth of the Audi means more vertical space between the loading edge and floor or a deeper loading surface (depending on interpretation of the specification).
Practically, this can mean that smaller items can be transported more securely and deeper (less shifting), and there is more volume in depth for stackable or tall items near the loading edge.
However, a deeper loading surface can make lifting heavy items in more difficult, especially since the loading edge height in the Audi is slightly higher.
The smaller differences in opening height and loading edge height (both <10%) have only minor practical effects: the Audi offers slightly more opening height, which helps when loading tall items, and its slightly higher loading edge can make lifting somewhat more strenuous.
Conclusion: For users who regularly transport longer or wider items, the Ford Focus Wagon is clearly more advantageous in practice. Those who prefer more deep, possibly better secured cargo volume near the loading surface (often for smaller, stackable loads) may benefit from the Audi A3 Sportback.