Trunk comparison: BMW i4 vs Hyundai Elantra GT Wagon

Significant Differences (>10%)

Deeper trunk depth in the BMW i4: The depth (loading edge → trunk floor) of the BMW i4 is 3.9 in or 900% greater than in the Hyundai i30 Wagon.

Higher loading edge in the BMW i4: The loading edge of the BMW i4 is 3.1 in (13%) higher above the road than in the Hyundai i30 Wagon.

Narrower trunk in the BMW i4: At its narrowest point, the trunk of the BMW i4 is 5.5 in (16%) narrower than in the Hyundai i30 Wagon.

Implications for Usability

Depth vs. loading edge height: Due to the greater depth, the BMW i4 offers more vertical usable space behind the loading edge — this is practical for stacking luggage or when bulky, relatively tall items can be loaded from above.

At the same time, the 3.1 in higher loading edge makes lifting heavy or awkward loads in and out more difficult; loading becomes ergonomically more strenuous, especially for heavy boxes or groceries.

Width of the cargo area: The Hyundai i30 Wagon is significantly wider at its narrowest point. This makes it more practical for wide or irregularly shaped items (e.g., strollers, wide boxes, furniture parts). In the BMW, such items are harder or impossible to load crosswise due to the reduced width.

Interaction of features: In short — the BMW offers more "depth/volume in depth" and enables better stacking, but due to the higher loading edge and narrower interior width, it is less comfortable for frequent loading and unloading of large, heavy, or wide items.

The Hyundai is more accessible (lower loading edge) and more flexible for wide cargo, better suited for users who often transport bulky or wide loads.

Other, Less Relevant Differences (<=10%)

The trunk length differences are small: with seats folded down +0.8 in (1%) in favor of the Hyundai, with the first row upright +2.8 in (7%) in favor of the Hyundai.

The width of the trunk opening is only +1.6 in (4%) larger in the Hyundai; the height of the opening is the same. These differences are practically less significant compared to the points mentioned above.