Trunk comparison: BMW X4 vs Mercedes Benz CLA Shooting Brake

Key Differences

The CLA Shooting Brake has a significantly deeper trunk floor: +5.5 in (175%) depth compared to the BMW X4. Conversely, the width of the trunk opening is noticeably larger on the BMW X4: +6.3 in (18%) compared to the CLA Shooting Brake.

All other differences (e.g., +2.4 in with seats folded down, +1.6 in with rear seats upright, +0.4 in opening height, +2 in narrowest trunk width, +1.6 in higher loading edge on the X4) are much smaller and are not highlighted here.

Impact on Usability

The greater depth of the CLA means more usable space volume in the trunk recess and more room for tall or stacked cargo behind the loading edge.

This facilitates transporting bulky, low-lying items and increases loading capacity at constant width. At the same time, a deeper floor can make lifting heavy items when loading somewhat less convenient (more lifting/bending).

The wider trunk opening of the BMW X4 makes it easier to load wide or flat items (furniture panels, large boxes, tires). Bulky cargo also fits more easily through the opening, even if the interior recess is overall less deep. For users who frequently transport wide, short items, the X4 is more practical.

Conclusion: CLA Shooting Brake = advantage in depth/volume for tall or stacked cargo. BMW X4 = advantage when loading wide, bulky items due to significantly larger opening. Smaller differences (cargo length with seats folded, opening height, loading edge height) have only minor practical impact.