Trunk comparison: Kia Sportage vs Peugeot 5008

Key Differences
Clear strengths appear on both sides when it comes to the trunk: The Peugeot 5008 offers a cargo space that is 7.5 in (≈11 %) longer with the seats folded down and a trunk that is 5.9 in (≈17 %) longer with the first row of seats upright compared to the Kia Sportage.
Conversely, the Kia Sportage is significantly more practical with all seats upright: its trunk is 22 in (≈165 %) longer than that of the Peugeot. Additionally, the narrowest width in the Peugeot's trunk is 4.3 in (≈11 %) larger.
Implications for Practical Use
Transporting long or bulky items: Due to the greater length with folded seats (+7.5 in) and the larger narrow width (+4.3 in), the Peugeot 5008 is better suited for long or wide cargo (e.g., furniture panels, longer sports equipment, bicycles with removed wheels).
The larger cargo volume with folded seats makes it the more practical choice when regularly transporting larger loads and folding down seat rows is necessary.
Everyday and family use without folding seats: The Kia Sportage has a clear advantage with its significantly larger trunk with all seats upright (+22 in / 165 %). This means more space for shopping bags, strollers, garment bags, or luggage without needing to fold seats.
Those who frequently travel with a full load of passengers and still want to transport a lot of luggage in the trunk will find the Sportage more practical for daily use.
Loading comfort and accessibility: The larger interior dimensions of the Peugeot (longer with folded seats, larger narrow width) make it easier to load bulky items; small differences in opening height, loading edge height, and opening width exist but are less significant than the main differences mentioned above and only moderately affect usability.
Conclusion
For regularly transporting large, long, or wide loads with folded seats, the Peugeot 5008 is more suitable. For daily use with full seating and frequent luggage transport without folding seats, the Kia Sportage is the more practical choice.