Trunk comparison: BMW i4 vs Mercedes Benz CLA Shooting Brake

Key Differences (highlighted: >10%)

The Mercedes‑Benz CLA Shooting Brake offers two significantly larger advantages compared to the BMW i4: The depth of the trunk (measured from the loading edge to the trunk floor) is 4.7 in greater, which corresponds to an increase of 120%.

Additionally, the width at the narrowest point in the Mercedes is 6.7 in (19%) wider than in the BMW i4. These two differences are significant and influence practical usability more than the other dimensions.

Impact on Usability

The considerably greater depth in the CLA Shooting Brake means more usable interior height and thus significantly more volume for bulky or stacked cargo (boxes, travel bags, sports equipment).

In everyday use, this makes loading tall cargo and stacking multiple pieces of luggage easier, facilitating use for moves, longer trips, or transports. The wider narrow point in the Mercedes makes it easier to slide wide items through the interior or place them sideways without needing to angle them.

For the BMW i4, a practical advantage remains the larger width of the trunk opening (+2.8 in), which somewhat eases loading very flat, wide items (e.g., furniture panels).

However, this wider opening cannot fully compensate for the disadvantage of the lesser depth and narrower interior width: wide or tall cargo fits better overall in the CLA Shooting Brake.

Conclusion: If the primary concern is maximum volume, stackability, and transporting tall or wide items, the Mercedes‑Benz CLA Shooting Brake offers noticeable advantages due to its significantly greater depth and larger interior width. The BMW i4 scores better with flat, wide cargo thanks to the larger opening width.