Trunk comparison: BMW X3 vs Opel Astra Wagon

Comparison of trunk dimensions for the BMW X3 and Opel Astra Wagon

Key Differences

Opel Astra Wagon offers +4.7 in (13%) more usable loading length with the rear seats upright than the BMW X3. The depth of the trunk (distance from loading edge → trunk floor) is +0.8 in (100%) greater in the Astra — the trunk floor thus sits deeper below the loading edge than in the BMW X3. The loading edge of the BMW X3 is +4.3 in (19%) higher above the road than in the Opel Astra Wagon.

Other, smaller differences

The BMW X3 has a 4.7 in (7%) longer loading floor with folded seats, a 0.4 in higher trunk opening, 0.4 in more width at the narrowest point, and a 2.8 in (7%) wider tailgate opening. These differences exist but are below the 10% threshold.

Implications for usability

Due to the greater loading length with the rear seats upright, the Astra is more flexible in everyday use when frequently transporting long items without folding down the rear seats (e.g., skis, slats, long boxes).

The larger distance from loading edge to trunk floor in the Astra means the floor sits deeper: luggage "falls" further into the cargo space when loading, which can make sliding bulky items in easier, but also creates a small step that can make pulling out small rolling suitcases more difficult or cause small items to remain in the front area of the trunk.

The significantly higher loading edge of the BMW X3 makes lifting heavy items more strenuous — this is relevant for regular transport of heavy loads.

In return, the BMW offers slightly more length and an overall somewhat wider opening with the seats fully folded down, which supports storing large or wide cargo with folded seats.

Practical conclusion

If you often transport long items with the rear seats upright or prefer a lower loading edge (easier loading and unloading), the Opel Astra Wagon is the more practical choice.

If, on the other hand, you more frequently carry very large loads with folded seats and want to benefit from a slightly wider opening, the BMW X3 is advantageous — but note the higher loading edge on the BMW.