Trunk comparison: Mercedes Benz GLB vs Renault Austral

Key Differences

The Mercedes‑Benz GLB offers a 6.7 in (11%) longer cargo area with the seats folded down than the Renault Austral. The trunk opening height on the GLB is 5.9 in (21%) higher. Additionally, the trunk depth (from loading edge to trunk floor) is 1.6 in (50%) greater on the GLB.

Other, smaller differences: With the first row of seats upright, the GLB is 3.5 in (10%) longer; the loading edge of the Austral is 2.4 in (8%) higher above the ground; the narrowest interior width is 2.4 in (6%) larger on the GLB, while the width of the trunk opening is 2.4 in (6%) larger on the Austral.

Impact on Usability

The highlighted advantages of the GLB (longer cargo area with folded seats, significantly higher opening, and greater trunk depths) make it overall more practical for bulky, long, or taller loads: furniture pieces, long profiles, or stacked luggage can be accommodated more easily.

The higher opening height facilitates loading taller items without tilting them sideways, and the greater depth increases the actually usable volume, especially with lighter loads.

The Austral, on the other hand, scores with a slightly wider trunk opening, which can simplify sliding in wider parts (e.g., boxes or wide packages), despite a somewhat narrower interior width at the tightest point.

The Austral’s loading edge, being 2.4 in higher, makes lifting heavy items somewhat more strenuous; the GLB has the advantage of a lower loading edge here.

Conclusion: If you frequently transport long, tall, or stacked items, the GLB is more practical. If you mainly load wide but not very deep parts, the slightly larger opening width of the Austral can be advantageous.