Trunk comparison: Citroen C3 vs Skoda Octavia Wagon

Key Differences
The Skoda Octavia Wagon offers significantly more cargo space lengthwise: with the seats folded down, the trunk of the Octavia is 19.7 in (37%) longer, and with the first row of seats upright, even 16.5 in (63%) longer than the Citroën C3. The trunk opening of the Octavia is also 5.9 in (17%) wider than that of the C3. In contrast, the Citroën C3 stands out with its trunk depth measurement: the depth (loading edge to trunk floor) is 5.1 in (130%) greater than in the Octavia.
Additionally, the loading edge of the C3 is 5.5 in (22%) higher above the road. Smaller differences such as the 0.4 in higher opening height of the C3 or the 1.6 in narrower interior width are negligible.
Implications for Usability
Practically, this means: The Octavia Wagon clearly has the advantage for long and bulky loads as well as for regular transport of items that require a lot of space across or lengthwise — thanks to the greater length with folded or upright seats and the wider opening, furniture, long slats, or bulky boxes can be loaded more easily.
The lower loading edge height of the Octavia makes loading heavy items easier.
The Citroën C3 offers a different strength through its greater trunk depth dimension: relatively more usable space between the loading edge and floor can facilitate the secure stowing of smaller, taller items in the trunk area or provide more "depth" for padded cargo.
However, the significantly higher loading edge makes lifting heavy items more strenuous and limits easy maneuvering of bulky loads.
For users who frequently transport long or wide goods, the Octavia is the more practical choice; those who need more compact but deeper storage space and rarely lift heavy items will find advantages in the C3.