Trunk comparison: BMW X5 vs Skoda Superb Wagon

Highlighted Differences (>10%)
Škoda Superb Wagon is significantly longer with the rear seats folded down: +10.6 in (≈15%) more usable length than the BMW X5. The trunk depth (distance from loading edge → trunk floor) of the Superb is +2.8 in (≈700%) greater than the X5. The loading edge of the BMW X5 sits significantly higher: +7.9 in (≈34%) above the road compared to the Superb.
Implications for Practicality
More usable length with folded seats (Superb +15%): Better suited for long items like slats, furniture parts, or skis. Those who regularly transport bulky, long cargo clearly have the advantage in the Superb.
Greater trunk depth in the Superb (+2.8 in / 700%): The trunk floor profile offers more "inset depth," allowing items to sit deeper and increasing usable volume for flat or elongated cargo. At the same time, a lower loading edge can mean heavy loads are easier to load (less lifting over the edge).
Higher loading edge in the BMW X5 (+7.9 in / 34%): The higher loading level makes lifting heavy items more strenuous — a disadvantage when frequently loading heavy cargo.
However, the higher floor can have advantages when ground clearance and splash protection are important (e.g., easier off-roading, less water in the trunk with a high curb).
Other, smaller differences (under 10%): The BMW X5 is slightly wider at the narrowest point and in opening width (+3.5 in and +1.2 in respectively), which facilitates loading very wide items. However, these advantages are more moderate than those mentioned above.
In summary: For transporting long or heavy-to-lift loads and for easy loading and unloading, the Škoda Superb Wagon is overall more practical.
The BMW X5, on the other hand, offers somewhat more lateral width and advantages in off-road/ground clearance due to the higher loading height, but is less comfortable for loading/unloading and transporting long items.