Trunk comparison: Mercedes Benz GLC vs VW Polo

Key Differences
The Mercedes‑Benz GLC offers significantly more cargo length: with the seats folded down, the trunk is 14.6 in (≈27%) longer, and with the first row upright, it is even 10.6 in (≈41%) longer than the VW Polo. The width of the GLC's trunk opening is 7.1 in (≈20%) larger, which makes loading wider items easier.
In contrast, the VW Polo has a significantly greater trunk depth between the loading edge and the trunk floor: +3.1 in (≈700%), meaning the floor lies noticeably lower below the loading edge.
Smaller differences: the GLC's trunk opening is 2.8 in (10%) higher, the narrowest width is 3.1 in (8%) larger on the GLC, and the loading edge of the GLC is only 0.4 in (1%) higher above the road.
Impact on Usability
The larger length dimensions and wider opening of the GLC make it clearly more practical for long or bulky cargo: furniture parts, long ladders, or skis can be accommodated more easily because both interior length and opening width offer more space.
For transports with folded seats or when longer items need to be carried with the rear seat upright, the GLC is clearly advantageous.
The lower loading floor of the Polo means that smaller or flat items are more "recessed" and can be better secured in the trunk; additionally, stacked luggage piles are less visible from the outside.
However, the deeper loading floor creates a noticeable height difference to the loading edge, which can make lifting heavy or bulky items over the edge more difficult. For very tall items, the recessed floor can reduce the effective interior height.
The exactly 10% higher opening height of the GLC marginally facilitates loading tall items, while the other small differences (narrowest width +3.1 in, loading edge height +0.4 in) are usually secondary in daily use but can be relevant for very wide or very low items.