Trunk comparison: BMW X5 vs VW Caddy Wagon

Key Differences (>10%)

BMW X5 offers significantly more cargo space with the seats folded down: +27.6 in length, which is +60%.
VW Caddy Wagon has a significantly higher trunk opening: +13.4 in, or +43%.
The loading edge of the BMW X5 sits much higher above the road: +8.7 in (≈+39%).
The stated depth-related difference (loading edge to trunk floor) is proportionally large (+0.4 in = 100%), but absolutely minimal.

Impact on Usability

Due to the significantly longer cargo space with the seats folded down, the BMW X5 is better suited for long, flat loads (e.g., slats, long furniture parts, surfboards, skis). The length makes it the better choice when items need to be transported crosswise or stretched out.

The VW Caddy Wagon scores with a much higher trunk opening and a lower loading edge (due to the lower loading edge height of the Caddy).

This makes it easier to load tall or bulky items in an upright position and reduces the effort when lifting. For bulky, tall, or voluminous cargo (e.g., boxes, cabinets, plants), the Caddy is more practical.

The small width and length differences in everyday use (±3–1.6 in) are negligible. The stated 0.4 in difference in depth is absolutely insignificant despite the high percentage value and hardly changes usability.

In short: BMW X5 = advantage for long, flat loads; VW Caddy Wagon = advantage for easy loading and unloading of tall/bulky items and simpler handling due to higher opening and lower loading edge.