Trunk comparison: Ford S-MAX vs Mercedes Benz GLB

Key Differences and Their Impact on Usability

The Ford S‑Max offers significantly more cargo length: it has +8.3 in (12%) more depth when all seats are folded down, and +6.7 in (18%) more when the first row remains upright.

This makes the S‑Max noticeably more practical for long items (e.g., furniture parts, skis, lumber) and for transports where the rear seat is used but longer cargo is needed.

The Mercedes‑GLB differs in the vertical trunk geometry: it has a +3.5 in (300%) greater depth between the loading edge and trunk floor and a +5.9 in (26%) higher loading edge above the road.

Practically, this means: the GLB allows for more height or “deeper” storage inside the trunk below the loading edge (advantageous for tall or stacked items), but lifting heavy or bulky loads into the trunk is more strenuous and less practical due to the significantly higher loading edge.

The width of the trunk opening is the same for both models; the narrowest point is only slightly wider on the GLB (+0.8 in, 2%) and hardly noticeable in practice. The trunk opening height of the S‑Max is 2 in (6%) greater, which also makes only a small difference.

Conclusion: For longer cargo and generally more flexible use of the cargo space, the Ford S‑Max is more advantageous in everyday use. The GLB scores with more “depth”/height inside, better suited for tall or stacked cargo, but is less practical for lifting heavy items due to the higher loading edge.