Trunk comparison: Opel Astra Wagon vs VW Polo

Key Differences
The Opel Astra Sports Tourer offers significantly more cargo space than the VW Polo. With the seats folded down, the trunk of the Astra is 15.7 in (29%) longer, and with the front seats upright, it is even 14.2 in (55%) longer than the Polo.
The height of the Astra's trunk opening is 6.3 in (23%) larger, the usable depth (loading edge to trunk floor) is 2.4 in (corresponding to 75%) larger, and the width of the trunk opening is 5.9 in (16%) larger than the Polo.
In contrast, the Polo's loading edge is 3.5 in (15%) higher above the road than the Astra's. The narrowest width inside the trunk is the same for both models.
Impact on Usability
The larger dimensions of the Astra practically mean: longer items are easier to transport (especially with the seats folded down), and the greater depth as well as the higher opening height make loading bulky or tall cargo easier.
The wider trunk opening of the Astra makes loading wide items simpler. The lower loading edge of the Astra reduces the effort required to lift heavy loads into the trunk; the Polo's higher loading edge requires more lifting, which is disadvantageous for frequent or heavy transport.
The consistently narrow interior cross-section of both models shows that there can still be restrictions for very wide parts at the tightest point in the cargo space — even though the Astra's opening is overall larger.
In summary: For users who regularly need to transport long, tall, or heavy cargo, the Opel Astra Sports Tourer is clearly more suitable; the VW Polo remains the more practical city and occasional use solution with more compact dimensions.