Trunk comparison: BMW X4 vs Opel Astra Wagon

Key Differences

The biggest differences concern the geometry of the cargo space: The trunk opening of the Opel Astra Sports Tourer is 5.9 in (21%) higher than that of the BMW X4, the depth from the loading edge to the trunk floor is 2.4 in (75%) greater in the Opel, and the loading edge itself is 7.1 in (30%) higher above the ground in the BMW X4 than in the Opel.

Each of these three values exceeds 10% and significantly affects loading and unloading.

Impact on Usability

Because the trunk opening of the Opel is significantly higher, bulky or tall cargo fits more easily through the opening; bulky boxes, plants, or taller luggage can be placed more easily into the Opel.

The greater depth between the loading edge and trunk floor in the Opel improves actual cargo space utilization directly behind the loading edge — items can be placed deeper and more stably and protrude less beyond the loading edge.

The significantly lower loading edge of the Opel makes lifting heavy luggage easier: In the BMW X4, you have to lift about 7.1 in more, which makes loading and unloading physically more strenuous and is disadvantageous for rolling suitcases or heavy furniture.

In practice, this means: The Opel is more comfortable for regular, heavy, or bulky cargo; the BMW X4 requires more strength when lifting and limits handling of large, heavy items.

Smaller differences — such as the folded cargo length (Opel +2.4 in / 3%) or width differences of 2–4% — are practically only relevant in edge cases and hardly change everyday usability.

In summary, the Opel offers better accessibility and more practical cargo geometry, while the BMW X4 matches in pure cargo length with the first row upright but is less comfortable to load due to the higher loading edge and lower opening.