Trunk comparison: Audi A6 Avant vs Mercedes Benz GLB

Biggest Differences

The Audi A6 Avant offers a longer cargo area: with the seats folded down, the trunk is 7.5 in (11%) longer, and with the first row of seats upright, it is even 8.7 in (23%) longer than the Mercedes-Benz GLB.

The GLB, on the other hand, has clear advantages in vertical space: the trunk opening is 5.9 in (21%) higher, the depth from the loading edge to the trunk floor is 3.9 in (500%) greater, and the loading edge itself is 3.1 in (13%) higher than in the A6. The width differences (at the narrowest point +2 in, opening width +0.8 in) are under 10% and therefore less significant.

Impact on Usability

Due to the longer cargo area of the A6 Avant, longer items can be transported more easily (e.g., skis, slats, furniture parts, long boxes), and loading flat, elongated cargo is more practical because it can be placed further forward in the vehicle.

The lower loading edge of the A6 also makes lifting heavy objects into the trunk easier.

The GLB is better suited for tall or bulky cargo: the higher opening and greater depth between the loading edge and floor create more vertical space immediately behind the opening, allowing tall items to stand upright or better stacking heights to be achieved.

However, the higher loading edge makes lifting heavier items more strenuous, and the larger "step" can hinder sliding large parts through.

In short: For long, flat, or heavy cargo, the A6 Avant is more favorable; for tall or bulky cargo, the GLB offers more space but pays for it with a higher loading edge that reduces loading comfort.