Trunk comparison: BMW X5 vs Opel Astra Wagon
Biggest Differences (over 10%)
Two measurements stand out clearly: The depth of the trunk (loading edge to trunk floor) is +5.1 in (1300%) greater in the Opel Astra Sports Tourer than in the BMW X5. Additionally, the loading edge of the BMW X5 is +7.1 in (30%) higher above the road than that of the Opel Astra.
What impact do these differences have on usability?
The significantly greater depth in the Opel means that the trunk interior sits deeper – more "vertical space" below the loading edge. This is advantageous when transporting tall or bulky items without folding down the rear seats.
At the same time, a deeper trunk floor can cause smaller or heavy items to slide further into the recess during loading and unloading and less often lie flush with the loading edge.
The significantly lower loading edge of the Opel (compared to the BMW) makes loading and unloading heavy or bulky loads easier: shorter lift, less effort, more convenient loading with a hand truck or boxes.
Conversely, the higher loading edge in the BMW places more strain when lifting heavy items but can help loaded items sink less into the cargo space while driving.
Smaller Differences (under 10%)
The cargo lengths with folded seats (+3.1 in / 4%) and with the first row upright (+0.8 in / 2%) favor the BMW X5 but are percentage-wise small and hardly noticeable in everyday use.
The width at the narrowest point (+3.1 in / 8%) and the width of the trunk opening (+0.8 in / 2%) also favor the BMW but remain below the 10% threshold and are mostly relevant only for very wide items.
The height of the trunk opening is +2 in (6%) greater in the Opel, which slightly eases loading tall items but also remains below the 10% threshold.
Conclusion
For frequent loading of heavy or tall items, the Opel Astra Sports Tourer is preferable: a significantly lower loading edge and much deeper cargo floor make handling easier and offer more usable vertical interior space.
Those who more often transport very wide or bulky items and benefit from slightly more width at the narrowest point have slight advantages with the BMW X5. Most other differences are minor and only marginally affect everyday practicality.