Trunk comparison: Kia Stonic vs Mercedes Benz CLA Shooting Brake

Summary of Relevant Differences

The Mercedes‑Benz CLA Shooting Brake offers a significantly longer cargo area with the seats folded down: +16.1 in (30%) compared to the Kia Stonic. Even with the rear seats upright, the CLA Shooting Brake is noticeably longer with +14.6 in (54%).

These length differences result in considerably more usable volume and make the CLA Shooting Brake much better suited for long or bulky loads and for larger amounts of luggage without folding the seats.

The Kia Stonic, on the other hand, scores with the opening: the height of the trunk opening is +3.1 in (11%) larger and the width of the trunk opening is +4.7 in (14%) larger than in the CLA Shooting Brake.

This means that wide and tall items fit more easily through the opening and loading is easier from the side door.

The depth of the trunk (loading edge to trunk floor) is +1.6 in (22%) greater in the Mercedes, which provides more space inside the cargo area for stacking or for deeper items. The width at the narrowest point is the same in both models, so there is no advantage or disadvantage here.

Implications for Usability

- Mercedes‑Benz CLA Shooting Brake: Better for users who frequently need to transport long, deep, or many items (e.g., furniture parts, long sports equipment, lots of luggage).

The larger length and depth dimensions increase flexibility in transport but the somewhat smaller opening can make loading large, bulky parts more difficult.

- Kia Stonic: Better suited for frequent loading and unloading of wide or tall items that fit more easily through the larger opening (e.g., boxes, cartons, bulky furniture parts introduced from above/side). However, the shorter overall length limits volume for very long loads.

Note: The loading edge height of the Kia is only 0.8 in (3%) higher — this is a marginal difference in practice and hardly affects loading. Overall: CLA Shooting Brake = more length/volume; Stonic = easier access for wide/tall cargo.