Trunk comparison: Mercedes Benz GLC vs Renault Austral

Key Differences and Their Impact on Usability

The most noticeable difference lies in the depth of the trunk: The Renault Austral offers an 3.1 in greater depth (≈700%) between the loading edge and the trunk floor than the Mercedes-Benz GLC.

Practically, this means that in the Austral, the cargo sits deeper in the trunk, which better accommodates taller items and reduces forward shifting. However, the loading edge of the Austral is also 2.8 in higher above the ground, making lifting heavy items during loading more strenuous.

Another relevant difference is the usable width in the trunk: The GLC has about 11% (≈4.3 in) more width at its narrowest point than the Austral.

This makes the GLC more practical for wide cargo (e.g., furniture parts, wide boxes, or two items placed side by side), while the Austral may face more restrictions with narrow diameters.

Other, smaller differences: With the seats folded down, the GLC has a slightly longer cargo area (+5.9 in / 9%) and also a bit more depth with the rear seat upright (+2.8 in / 8%). The trunk opening of the GLC is about 1.2 in higher, while the Austral’s opening width is minimally 0.8 in larger.

These points improve loading longer items in the GLC and slightly ease passing wider parts through the opening in the Austral, but are less decisive in everyday use than the above >10% differences.

In summary: The Austral is better suited for taller or deeper cargo but has a somewhat more cumbersome loading process for heavy loads due to the higher loading edge. The GLC is more advantageous for wide or bulky items and overall has a more accessible loading edge, which facilitates handling heavier parts.