Trunk comparison: Seat Leon vs VW ID.4
Key Differences
The VW ID.4 offers significantly more usable base area: with the seats folded down, the trunk is +7.9 in (≈13%) longer, and with the first row of seats upright, it is +4.3 in (≈13%) longer than in the Seat Leon. Additionally, the ID.4 is +7.9 in (≈25%) wider at its narrowest point.
In contrast, the Seat Leon has a significantly greater trunk depth: the distance from the loading edge to the trunk floor is +5.9 in (≈150%) higher in the Leon.
The height of the trunk opening is the same, the Leon's loading edge is only +0.4 in higher, and the Leon's opening width is only +0.8 in larger (both differences ≤10% and not highlighted here).
Impact on Usability
Due to the greater length and significantly larger minimum width, the VW ID.4 is better suited for long or wide cargo (e.g., bicycles, long boxes, furniture, skis) and for cargo-intensive use with folded seats.
The additional 11–7.9 in in length results in a noticeably larger, flatter cargo area, making it easier to load bulky items.
The Seat Leon scores with its significantly greater trunk depth (loading edge → floor). This provides more vertical storage space below the loading surface and a lower loading depth relative to the interior: for tall or stacked items (suitcases, boxes, bulky shopping), more usable volume is created.
Because of the lower position of the loading floor, the cargo sits overall lower, which lowers the center of gravity and can improve stability while driving. However, the Leon's shorter length and narrower width limit the accommodation of long or wide items despite the greater depth.
Practically speaking: Those who frequently transport long, wide, or bulky items or often fold down the rear seats will benefit more from the ID.4. Those who need more hidden/vertical capacity and a lower loading position for suitcases and stacked goods will find advantages in the Leon—as long as the cargo is not too long or wide.
The minimal differences in loading edge height (+0.4 in) and opening width (+0.8 in) have hardly noticeable effects in practice when loading.