Trunk comparison: Skoda Fabia vs VW Golf Wagon

Key Differences
The VW Golf Wagon offers significantly more cargo length: with the seats folded down, its trunk is 18.1 in (33%) longer, and with the first row of seats upright, it is even 13.8 in (47%) longer than the Škoda Fabia.
The Škoda Fabia, on the other hand, has a considerably greater depth from the loading edge to the trunk floor: this distance is 3.1 in (73%) larger than in the Golf.
Additionally, the Fabia's loading edge sits 2.8 in (11%) higher above the ground. Smaller differences: the Fabia's trunk opening is only slightly higher (+1.6 in, 5%) and the narrowest width is slightly larger in the Golf (+3.1 in, 9%); the width of the trunk opening is the same.
Impact on Usability
For transporting long or bulky items (slats, panels, moving luggage, longer camping or sports equipment), the Golf Wagon is clearly more practical: the significantly longer cargo area — both with folded seats and with the first row upright — allows for longer loads and, in practice, more usable storage space.
The Fabia offers a different usage quality with its greater depth from the loading edge to the floor: items lie deeper in the trunk, which reduces shifting and can be advantageous when stacking higher or irregularly shaped cargo.
Overall, the higher loading edge in the Fabia makes lifting heavy or bulky loads a bit more difficult compared to the Golf, as the lift must be higher.
Conclusion: Those who frequently transport long or large items or need a lot of flexible cargo space benefit more from the VW Golf Wagon. Those who prefer a deeper trunk floor and a "recessed" cargo area and accept the somewhat higher lifting will find the Škoda Fabia a sensible alternative.