Trunk comparison: VW ID.4 vs VW Polo

Summary of the Biggest Differences

The VW ID.4 offers a 12.2 in (22%) longer cargo length with the seats folded down than the VW Polo. With the front seats upright, the ID.4's trunk space is even 11 in (42%) longer.

The trunk opening of the ID.4 is 4.3 in (16%) higher, the width of the opening is 5.9 in (16%) larger, and the depth from the loading edge to the trunk floor is 0.8 in (25%) greater than in the Polo.

Smaller differences: the loading edge of the ID.4 sits 1.6 in (6%) higher above the ground, and the narrowest width in the trunk is 0.4 in (1%) larger in the Polo.

What Does This Mean for Usability?

The significantly greater loading length (22–42%) makes the ID.4 much better suited for long items like slats, skis, furniture parts, or bulky boxes — seats need to be folded down or parts disassembled less often.

The higher trunk opening (+16%) and the wider opening (+16%) make it easier to load bulky or wide items and reduce maneuvering and angle issues when sliding them in.

The greater depth (+25% relative to the small reference size) means more usable volume in the loading area, better stacking, and more space behind the loading edge.

A practical disadvantage is the slightly higher loading edge of the ID.4 (+1.6 in, ~6%), which means a bit more effort is required to lift heavy items in; however, this difference is minor compared to the larger advantages in length, opening, and depth.

The minimally larger narrowest width in the Polo (+0.4 in) is practically negligible.