Trunk comparison: Audi A4 Avant vs Jeep Compass

Key Differences
The Audi A4 Avant offers a cargo area that is +7.1 in (11%) longer with the seats folded down and even +9.1 in (28%) longer with the front seats upright compared to the Jeep Compass.
The trunk opening height is the same for both models; the narrowest width and the opening width differ only slightly (+0.8 in / 2% and +0.4 in / 1%, respectively) and are therefore negligible.
The Jeep Compass, on the other hand, has a significantly greater distance between the loading edge and the trunk floor — +4.3 in (220%) — as well as a higher loading edge above the road — +5.5 in (22%).
Impact on Usability
The longer cargo space of the Audi A4 Avant makes it more practical for long items (e.g., slats, skis, furniture parts) and for situations where the rear seats are regularly folded down.
Combined with the lower loading edge, loading and unloading heavy or long cargo is generally easier in the Audi — less lifting, better sliding of longer parts.
In the Jeep Compass, the higher loading edge and the greater depth from the loading edge to the trunk floor result in a more pronounced height step when loading. This makes sliding in large, flat, or long items more cumbersome and lifting heavy loads more strenuous.
Advantages of the Compass may include: smaller items can be more easily "recessed" or kept out of sight due to the lower floor, and the higher loading edge offers more ground clearance for off-road use.
Conclusion: For frequent transport of long or heavy items and for easy loading, the Audi A4 Avant scores better. The Jeep Compass offers advantages in terms of privacy/storage options and off-road/ground clearance due to its design but is less comfortable for loading.