Trunk comparison: Opel Corsa vs Skoda Fabia

Key Differences
The Škoda Fabia has clear advantages in important dimensions: With the rear seat upright, the cargo area of the Fabia is +3.1 in (≈12%) longer than in the Opel Corsa.
The trunk opening of the Fabia is both higher and wider than that of the Corsa: the opening height is +3.5 in (≈12%) larger, and the opening width is even +5.5 in (≈16%) larger.
Smaller differences: with the seats folded down, the Fabia is +3.5 in (7%) longer, and the depth from the loading edge to the floor is +0.4 in (6%) greater in the Fabia. The loading edge of the Corsa is +0.8 in (3%) higher above the ground, and the narrowest interior width is +1.2 in (3%) greater in the Corsa.
What this means for usability
Due to the larger opening height and width, the Fabia is significantly easier to load with tall or wide items: boxes, strollers, or bulky furniture usually fit more easily through the opening because less tilting and maneuvering is needed.
The +3.1 in longer usable cargo space with the rear seat upright makes the Fabia more practical in everyday use for suitcases, larger shopping, or longer items that need to be transported without folding down the seats.
On the other hand, the narrowest interior width in the Fabia is slightly smaller than in the Corsa. This means very wide parts can fit more easily through the door opening but may get stuck or not lie optimally further back in the cargo area at a narrow point.
The +0.8 in higher loading edge of the Corsa makes lifting heavy loads slightly more strenuous than in the Fabia, but this is only a minor disadvantage.
Conclusion: Those who often carry tall or wide loads or need more usable length with the rear seat upright benefit more clearly from the Fabia. If maximum width at the narrowest point in the cargo area is important, the Corsa has a slight advantage – but the difference is small.