Trunk comparison: Jeep Renegade vs VW ID.4

Key Differences (highlighted)
The VW ID.4 offers a significantly longer loading length in the trunk when the first row of seats is upright: +22% (6.7 in) compared to the Jeep Renegade.
The Jeep Renegade has two other values that are clearly advantageous: the height of the trunk opening is +11% (3.5 in) larger and the depth of the trunk (distance from loading edge → trunk floor) is +40% (1.6 in) deeper than in the VW ID.4.
Impact on Usability
The longer loading length of the VW ID.4 with the rear seat upright makes it better suited for long items without folding the seats (e.g., skis, long boxes, or multiple suitcases).
The slightly larger minimum width and the wider trunk opening of the ID.4 (each in the single-digit percentage range) also support loading wider luggage.
The Jeep Renegade benefits from the higher trunk opening and the significantly deeper loading floor. The larger opening height allows loading tall items in the upright position; the deeper loading floor creates more vertical volume and ensures that loaded goods sit deeper and thus more stably in the cargo space.
Practical consequences are better securing of sack goods and stackable loads as well as less shifting.
However, the deeper loading floor can make lifting heavy items somewhat more cumbersome (more "tilting" entry into the lower area), and the slightly higher loading edge of the Renegade (small difference) slightly increases the lift when loading.
In summary: For longer, flat loads without folding, the ID.4 is more practical; for tall or bulky loads placed vertically and more stable storage in the cargo space, the Renegade is better suited.