Trunk comparison: Mercedes Benz CLA Shooting Brake vs VW Touran

Key Differences (>10%)
The VW Touran has a +5.9 in (21%) higher trunk opening than the Mercedes-Benz CLA Shooting Brake. The width of the Touran's trunk opening is +6.7 in (20%) larger. The loading edge of the CLA is +5.1 in (21%) higher above the road.
The depth of the trunk (loading edge to trunk floor) is +8.3 in (2100%) greater in the CLA. In the "all seats upright" condition, the CLA offers a trunk that is +28.3 in (212%) longer than the Touran. The narrowest trunk width is the same for both models.
Implications for Usability
Due to the higher trunk opening and the wider opening, the VW Touran is more practical for loading tall and wide items (e.g., boxes, furniture, strollers). The lower loading edge in the Touran makes lifting heavy loads easier and gentler.
The CLA Shooting Brake, on the other hand, offers significantly more usable length (+28.3 in) and a significantly greater trunk depth measurement (+8.3 in) with the rear seats upright, making it better suited for long or flat cargo and luggage when the rear seats are occupied.
However, the higher loading edge makes lifting heavy items into the vehicle more difficult.
Since the narrowest width is the same, neither door restricts narrower parts additionally; when transporting very wide parts, the Touran still has the advantage due to the larger opening.
In summary: Touran = easier loading and unloading of tall/wide loads; CLA Shooting Brake = significantly more usable depth/length with rear seats occupied, but with a higher loading edge.