Trunk comparison: Audi Q3 vs Mazda Mazda CX-5

Key Statement

The most notable difference lies in the depth of the trunk: the Audi Q3 has a depth (loading edge → trunk floor) that is 1.6 in or 80% greater than the Mazda CX‑5. All other deviations are relatively small (under 10%): the Mazda offers slightly more length with folded seats (+1.6 in, 2%) and with the first row upright +2.4 in (7%), the narrowest width is 2 in (5%) larger in the Mazda, the width of the trunk opening is 2.4 in (6%) larger in the Audi, and the loading edge height and opening height differ by about 0.4 in (≈1%) each.

Impact on Usability

The significantly greater depth of the Audi Q3 makes the trunk practically deeper: objects can be lowered further into the cargo space, which is advantageous when vertical volume is needed or when luggage is to be stacked flat and wide.

Due to the deeper floor position, cargo sits more securely in the "trunk well" and is less likely to slide forward.

A disadvantage may be that very heavy items need to be lowered slightly more when loading or lifted a bit more when unloading – however, the loading edge height differs hardly at all (only ~0.4 in), so the additional effort is minimal in practice.

The smaller differences (<10%) are rather secondary: the Mazda has a few centimeters more loading length with folded seats and with the rear bench upright, which helps when transporting very long but rather flat items. The slightly larger narrowest width in the Mazda makes placing narrower items easier, while the slightly larger opening width in the Audi can simplify forcing in wider parts. Overall, the Audi is the more practical choice when deeper storage and more secure sinking of cargo are important; the Mazda scores slightly in length and interior width spots, without these advantages being dramatically significant in most everyday scenarios.