Trunk comparison: VW Caddy Wagon vs VW Taigo

Key Differences
With the seats folded down, the VW Taigo offers a significantly longer cargo area: +15.7 in (34%) more trunk depth than the VW Caddy Wagon. In everyday use with the first row of seats upright, however, the Caddy Wagon has the edge: +9.8 in (30%) longer trunk.
The trunk opening of the Caddy Wagon is significantly higher: +13.4 in (43%) compared to the Taigo, and the narrowest interior width as well as the width of the opening are each +5.5 in (14%) larger in the Caddy.
The Taigo has a considerably higher loading lip and depth: the depth (loading lip → trunk floor) is +7.1 in (900%) higher, and the loading lip overall is +7.1 in (32%) higher above the road than in the Caddy.
Impact on Usability
The longer cargo area of the Taigo with folded seats makes it better suited for long items (e.g., slats, skis, long boxes), as long as they fit through the narrower opening and the lower opening height.
However, the high loading lip and greater depth in the Taigo make loading and unloading heavy or bulky items more difficult: heavy crates or furniture must be lifted higher.
The Caddy Wagon is more practical in everyday use for bulky or wide cargo: the greater width at the narrowest point and the wider opening make it easier to store large boxes, furniture pieces, or strollers.
The significantly higher trunk opening allows for better loading of voluminous items. Additionally, the lower loading lip of the Caddy is advantageous when loading and unloading heavy loads.
In short: For longer, slender cargo with folded seats, the Taigo is the better choice; for wide, tall, or heavier cargo in everyday use as well as easier loading and unloading, the Caddy Wagon scores higher.