Trunk comparison: Audi Q2 vs Opel Astra Wagon

Key Differences
The Opel Astra Sports Tourer offers significantly more cargo length: with the seats folded down, the trunk is 13 in (23%) longer, and with the front seats upright, even 9.4 in (31%) longer than the Audi Q2. The depth of the trunk (loading edge to trunk floor) is 1.2 in (27%) greater in the Astra.
The width of the trunk opening is also noticeably larger in the Astra by 5.1 in (14%); however, the narrowest trunk width differs only slightly (+1.2 in / 3%).
The loading edge of the Audi Q2 is 5.9 in (25%) higher above the ground than that of the Astra. The height of the trunk opening is 3.1 in (10%) larger in the Astra.
Implications for Usability
The significantly greater cargo length of the Astra makes it more practical for long or bulky items (e.g., slats, skis, furniture parts) and offers overall more usable volume, especially when the rear seats are folded down.
The greater depth means that cargo sits deeper and thus more stably in the vehicle, allowing more volume to be utilized under the tailgate. The wider trunk opening facilitates loading and unloading wider items and reduces folding and maneuvering when storing cargo.
The higher loading edge of the Audi Q2 increases the effort required to lift heavy items into the vehicle and makes loading less practical for people with limited mobility; at the same time, the higher loading edge can be advantageous when ground clearance or protection against water ingress is important.
Differences under 10% (e.g., the narrowest trunk width) have only minor effects on everyday usability.
Overall, the Opel Astra Sports Tourer is clearly superior in terms of cargo space and practicality, while the Audi Q2 is more compact and may have other advantages or disadvantages due to the higher loading edge (e.g., easier entry height, possible benefits in ground clearance).