Trunk comparison: BMW 3 Series Touring vs Opel Astra Wagon

Key Differences (highlighted: >10%)

Width at the narrowest point: The Opel Astra Wagon is +5.5 in (15%) wider at the narrowest point of the trunk compared to the BMW 3 Series Touring. Depth (loading edge → trunk floor): The Opel has a difference of +0.4 in (100%) here compared to the BMW.

What are the implications for usability?

The significantly larger narrowest width in the Astra (+5.5 in / 15%) means a practical advantage when loading bulky or wide items: wide boxes, furniture parts, or sports equipment fit more easily without complicated angling or folding down the seats.

Those who frequently transport wide loads will experience noticeably fewer restrictions in the Astra.

The +0.4 in greater distance from the loading edge to the trunk floor in the Astra is given as very large percentage-wise (100%) but is absolutely minimal.

In practice, this centimeter is hardly relevant for usable volume — it barely affects actual packability but can make a small difference with very flat items or when rolling boxes in.

Other, smaller differences: When all seats are folded down, the BMW 3 Series Touring offers a slightly longer loading floor (+3.5 in / 5%), which can be advantageous for very long items. With the seats upright, the Astra is somewhat longer (+2.8 in / 7%).

The trunk opening of the Astra is slightly higher (+2.4 in / 8%) and overall a bit wider at the opening (+2 in / 5%), which slightly facilitates loading tall or bulky items. The loading edge of the BMW is about 0.4 in higher (+2%), which can minimally complicate lifting heavy objects.

Conclusion: For users who frequently transport wide loads, the Opel Astra Wagon is the more practical choice due to the significantly larger narrowest width.

For very long items and maximum interior cargo space with folded seats, the BMW has slight advantages. The +0.4 in (100%) depth difference is more a percentage effect with a small absolute difference and has little impact in everyday use.