Trunk comparison: Jeep Compass vs Peugeot 308 SW 3-row

Key Differences
The Jeep Compass offers a 7.9 in (14%) longer trunk with fully folded seats than the Peugeot 308 SW. In the configuration with the first row of seats upright, however, the Peugeot has a 10.2 in (32%) longer trunk.
When all seats are upright (full load configuration), the Jeep has a significantly larger cargo area: +18.5 in (134%) compared to the Peugeot.
The trunk depth (from the edge of the loading lip to the floor) is 4.7 in (300%) greater in the Jeep, while the loading lip of the Jeep Compass is 8.3 in (38%) higher above the road.
Smaller differences, not exceeding 10%, include the Peugeot's trunk opening being about 1.6 in higher and the width at the narrowest point as well as the opening width being slightly in favor of the Peugeot (+1.6 in and +3.9 in respectively).
Impact on Usability
For transporting long items with folded seats, the Jeep is better suited due to the additional length (+7.9 in) — it allows longer loads with maximum use of the cargo space.
In the specific seat configuration with the first row upright, the Peugeot has the advantage (+32%) and is therefore more favorable when longer items need to be transported in this position without adjusting other seats.
With full occupancy (all seats upright), the practical difference clearly favors the Jeep: +134% more cargo area means the Jeep is significantly better for family trips with luggage or for simultaneous transport of passengers and suitcases.
Those who regularly need to accommodate luggage with full seating benefit from the Compass.
The significantly greater trunk depth of the Jeep (+300%) increases usable volume vertically and allows for deeper storage of cargo. This can be practical for standing/tall stacked items or when underfloor use is important.
At the same time, the higher loading lip of the Jeep (+38%) makes lifting heavy loads into the trunk more strenuous and makes sliding low, wide items over the threshold more difficult compared to the Peugeot.
The Peugeot scores points for easier accessibility: a slightly higher opening and greater widths facilitate loading wide or bulky items through the opening, even though these advantages are numerically smaller.
Overall: Jeep = larger interior space, more depth, and better usability with full occupancy or when a lot of volume is needed; Peugeot = somewhat better accessibility and more length in certain seat configurations.