Trunk comparison: Audi Q5 vs Tesla Model Y

Main Differences
The Tesla Model Y offers significantly more cargo length: with the seats folded down, the trunk is 11 in (17%) longer, and with the first row upright, 6.3 in (17%) longer than the Audi Q5. The Audi Q5, on the other hand, has a trunk opening that is 3.9 in (14%) higher, a significantly greater trunk depth (loading edge to trunk floor) by 3.1 in (700%), as well as a wider trunk opening by 4.7 in (12%) compared to the Tesla.
Smaller differences: the loading edge of the Audi is 1.6 in (6%) higher and the narrowest width is 3.1 in (8%) larger on the Audi — these values are under 10%.
Impact on Usability
Due to the greater cargo length, the Tesla Model Y is better suited for long, flat items like slats, furniture parts, or long boxes and for users who regularly fold down the rear seats. The slightly lower loading edge of the Tesla also makes it easier to lift heavy items into the vehicle.
The Audi Q5, on the other hand, is advantageous when it comes to bulky, wide, or taller cargo: the higher trunk opening and greater depth as well as the wider opening make it easier to accommodate bulky or tall items and maneuver when loading.
In short: Model Y scores on length and easy lifting, Q5 on width/height and handling bulky, voluminous cargo.