Trunk comparison: Audi Q5 vs Opel Corsa

Key Data and Highlighted Differences
The Audi Q5 offers 13.4 in (+26%) longer cargo space with the seats folded down than the Opel Corsa and 11.4 in (+44%) longer cargo space with the first row of seats upright.
The width of the Audi Q5's trunk opening is 10.6 in (+31%) larger than that of the Opel Corsa. In contrast, the depth of the trunk (measured from the loading edge to the trunk floor) is 3.9 in (+125%) greater in the Opel Corsa than in the Audi Q5.
What This Means in Everyday Use
The significantly greater loading length of the Audi Q5 (both with folded and upright rear seats) makes it much better suited for long items such as slatted frames, skis, long boxes, or furniture parts.
In practice, more length can be loaded into the Q5 without having to adjust the seats in a complicated way. The significantly wider trunk opening also makes it easier to load and unload bulky or wide items and reduces the risk of damaging edges.
The Opel Corsa scores with a significantly greater trunk depth (loading edge → floor). This creates more vertical storage space in the central area of the cargo space and can help when stacking suitcases or storing tall items.
At the same time, the greater depth often means a larger height difference between the loading edge and the floor, which can make lifting heavy loads during loading and unloading more difficult and handling less practical when wide or long items need to be placed crosswise.
Less pronounced differences (under 10%) are the height of the trunk opening (+2.4 in in the Q5), the height of the loading edge (+1.6 in in the Q5), and the narrowest width of the trunk (+2.8 in in the Q5).
While these do affect comfort and ergonomics, they are less decisive in everyday use than the differences highlighted above.
Practical Conclusion
If you frequently transport long or wide loads (furniture, sports equipment, long boxes), the Audi Q5 is the more practical choice due to its greater loading length and wider opening.
If, on the other hand, you often stack tall items or need vertical storage space, the Opel Corsa can offer advantages with its deeper trunk geometry — although at the expense of convenient handling of heavy or bulky loads.