Trunk comparison: Peugeot 5008 vs VW Tiguan Allspace

Biggest Differences (highlighted)
The VW Tiguan Allspace has a significantly longer cargo space with all seats upright: it is 5.1 in (+38%) longer than the Peugeot 5008. The trunk opening of the Peugeot 5008 is 3.1 in (+11%) higher than that of the Tiguan, and the narrowest point in the Peugeot's trunk is 5.9 in (+15%) wider than in the Tiguan.
At the same time, the loading edge of the VW Tiguan Allspace is 3.1 in (+12%) higher above the road than that of the Peugeot.
Implications for Usability
Because the Tiguan Allspace offers significantly more cargo length with upright seats, it is more practical when multiple passengers are on board and longer luggage or suitcases need to be transported.
For families or trips with full occupancy, the Tiguan thus provides noticeably more usable storage space behind the seats.
The Peugeot, on the other hand, scores points when loading and unloading wide or tall items: the higher trunk opening and the greater width at the narrowest point make it easier to stow bulky cargo (e.g., large boxes, furniture parts, or bulky sports equipment).
The lower loading edge of the Peugeot also makes lifting heavy items easier and more back-friendly than in the Tiguan.
With folded seats and other small differences (±1–7%), the vehicles are practically comparable: when it comes to transporting long items with fully folded seats, the difference is negligible.
Summary
Those who need more cargo length with full occupancy should choose the VW Tiguan Allspace. Those who frequently load wide, tall, or heavy items and value a lower loading edge and greater usable width are better served by the Peugeot 5008.