Trunk comparison: VW Golf Wagon (Mk5) vs Durchschnitt Compact SUV

Key Differences
The VW Golf 5 offers a significantly longer loading length: with the seats folded down, the Golf's trunk is +8.3 in (14%) longer, and with the first row of seats upright, the advantage is even +11 in (36%) compared to the average of compact SUVs.
The compact SUV, on the other hand, has a noticeably deeper trunk geometry and a higher loading edge: the depth (loading edge to trunk floor) is +3.5 in (180%) greater, and the loading edge is +3.9 in (16%) higher above the road.
Smaller differences, below the 10% mark, include the trunk opening height (+2 in / 7% in favor of the SUV) as well as the narrow width (+0.8 in / 2%) and opening width (+1.6 in / 4%) in favor of the Golf.
Impact on Usability
More loading length in the Golf clearly benefits long, flat items (e.g., furniture parts, slats, skis): they can be accommodated more easily, especially when the seats are folded down.
Because the Golf's loading edge is lower, lifting heavy loads into the trunk is easier — a practical everyday advantage when loading boxes or luggage.
The compact SUV offers more usable volume in the cargo well and more vertical space below the opening due to the greater depth beneath the loading edge.
This is practical for bulky or tall items that must not protrude as much or when something needs to be "sunk" into a deeper cargo well. At the same time, the higher loading edge makes lifting heavy loads more strenuous and reduces comfort when loading.
The slightly greater opening width and narrowest width of the Golf are only marginal advantages in practice; the SUV's opening height is slightly higher (7%) but plays a subordinate role compared to the larger differences mentioned.
In short: Those who frequently transport long, flat loads and heavy luggage and appreciate easy access benefit more from the VW Golf 5. Those who benefit from a deeper cargo space and additional volume below the loading edge (with less frequent lifting of heavy loads) find advantages in the compact SUV.