Trunk comparison: Audi Q3 vs Audi Q5

Key Differences

With the seats folded down, the Audi Q3 and Audi Q5 have the same trunk volume. With the first row of seats upright, the Q5's trunk is 2 in (+6%) longer; other differences in height, opening width, and narrowest width are each in the range of 1–3% and are therefore minor.

The only significantly larger dimension is the trunk depth (loading edge to trunk floor): the Audi Q3 is 0.4 in or 13% deeper here than the Q5.

Impact on Usability

The Q3's 13% greater trunk depth practically means: items lie somewhat deeper below the loading edge in the Q3. Advantage: luggage sits lower and tends to be more stable in the cargo area, small items are less visible and less likely to slip through openings.

Disadvantage: accessing cargo lying on the floor requires a bit more bending and can make lifting heavy items in and out somewhat less convenient.

The other differences (e.g., the Q5's 6% longer surface area with the rear seat upright, marginally larger opening height, and width differences) are so minor that they hardly create noticeable advantages or disadvantages in everyday use.

In short: those who prefer a slightly deeper, more protected trunk floor will find the Q3 suitable; those who want a bit more cargo length with the rear seat upright have a slight advantage with the Q5.