Trunk comparison: BMW X4 vs Hyundai Elantra GT Wagon

Key Differences

The Hyundai i30 Wagon offers slightly more cargo length with the seats folded down and with the first row upright (+2.4 in / +3% and +1.2 in / +3%, respectively) and is minimally wider at the narrowest point of the trunk (+0.8 in / +2%).

The BMW X4 has a somewhat larger opening width (+2 in / +5%) and a slightly higher opening height (+1.2 in / +4%), but these differences are under 10%.

Significant differences exist in trunk depth and loading edge height: The depth of the BMW X4 (loading edge to trunk floor) is +3.1 in (+700%) greater than that of the Hyundai i30 Wagon. Additionally, the loading edge of the BMW X4 is +6.7 in (+27%) higher above the ground.

Impact on Usability

The considerably greater trunk depth of the BMW X4 means more volume can be stored between the loading edge and trunk floor — useful for bulky or tall items that need to be placed deep in the cargo area, or for vertical separation (e.g., lower storage space).

At the same time, the significantly higher loading edge makes lifting heavy loads into the trunk more strenuous and increases the risk of tipping when loading heavy items. For frequent loading of heavy, bulky goods or transporting items that should be slid in easily, the higher loading edge is a disadvantage.

The Hyundai i30 Wagon with its lower loading edge is easier to load — especially for heavy or awkward loads, bicycles with minimal disassembly, or groceries.

However, the reduced depth means less "depth" volume is available, requiring items to be stacked more shallowly or built higher if needed; this can limit usability for very tall or irregularly shaped cargo.

Overall: BMW X4 = more usable depth volume but significantly higher lifting when loading. Hyundai i30 Wagon = easier loading thanks to lower loading edge, but somewhat less depth and slightly more length with seats folded down.