Trunk comparison: Audi Q5 vs VW ID.4

Most Important Difference (›10%)

The depth of the trunk (loading edge → trunk floor) is 0.8 in or 25% greater in the VW ID.4 than in the Audi Q5. This is the only difference exceeding 10% and therefore the most important difference between the two models.

Other Differences (under 10%)

- With the seats folded down, the trunk of the VW ID.4 is 1.2 in (2%) longer than that of the Audi Q5.
- With the first row of seats upright, the Audi Q5 has a trunk that is 0.4 in (1%) longer than the ID.4.
- The height of the trunk opening of the ID.4 is 0.4 in (1%) greater than that of the Q5.
- The loading edge height of both vehicles is the same.
- The narrowest interior width is 0.8 in (2%) greater in the Audi Q5 than in the ID.4.
- The width of the trunk opening is 2.4 in (6%) larger in the Audi Q5 than in the ID.4.

Impact on Usability

The greater depth of the ID.4 (25% more) means more usable volume vertically: taller or stackable items fit more easily in the cargo space, leaving more room overall for bulky or tall loads.

Since the loading edge height is the same, the initial lifting effort does not change; however, the trunk floor in the ID.4 is lower, so placing and reaching items further down in the cargo area requires reaching deeper.

The wider trunk opening of the Audi Q5 (+2.4 in) and the slightly greater narrowest interior width (+0.8 in) make loading and unloading wider or irregularly shaped items easier.

Small length differences (±1–1.2 in) are negligible for most everyday cases but can have a marginal effect in special situations (e.g., long items with certain seat positions).

Conclusion

For users who frequently transport tall or stackable cargo, the VW ID.4 offers the more practical cargo space due to its significantly greater depth.

Those who often load wider items or need a somewhat larger opening have an advantage with the Audi Q5. The other differences are minor and only minimally affect everyday usability.