Trunk comparison: BMW 3 Series Touring vs VW ID.4

Key Differences (more than 10%)
The VW ID.4 offers a significantly different loading geometry compared to the BMW 3 Series Touring. The trunk opening of the ID.4 is 3.1 in (+11%) higher, allowing for more vertical clearance for tall items.
The depth between the loading edge and the trunk floor in the ID.4 is 3.5 in (+900%) greater, meaning the interior space extends much deeper below the loading edge. At the same time, the loading edge of the ID.4 is 5.5 in (+23%) higher above the ground than that of the BMW.
Impact on Usability
Together, these differences practically result in the following: The higher opening of the ID.4 makes it easier to store tall items or load them vertically (e.g., furniture parts, boxes).
The greater depth below the loading edge increases the usable volume beneath the opening — more space for bulky or voluminous cargo that can lie "deeper" in the trunk.
In contrast, the significantly higher loading edge of the ID.4 makes lifting heavy items less comfortable: suitcases, beverage crates, or heavy furniture pieces must be lifted higher, making loading and unloading more strenuous and a disadvantage compared to the lower BMW when used frequently.
For regular loading and unloading of heavy loads or for people with limited strength, the BMW is therefore more practical.
In short: VW ID.4 = more interior height and depth (better for bulky or tall cargo). BMW 3 Series Touring = lower loading edge and thus easier handling of heavy items; also slightly longer loading floor with seats folded down (under 10%).