Trunk comparison: BMW X3 vs Opel Astra Wagon

Key Differences

Among the given dimensions, two differences stand out clearly: The Opel Astra Sports Tourer has a 5.5 in (≈1300%) greater depth between the loading edge and trunk floor than the BMW X3. At the same time, the loading edge of the BMW X3 is 3.5 in (≈15%) higher above the road surface than that of the Opel.

Impact on Usability

The significantly greater depth in the Opel practically means more usable depth behind the loading edge: higher vertical capacity in the inner trunk area and more space for stacking or accommodating taller items.

Combined with the lower loading edge in the Opel, this results in a clear advantage when loading and unloading heavy or tall cargo — less effort when lifting, easier pushing/sliding of bulky items, and easier access to the trunk floor.

In the BMW, the 3.5 in higher loading edge leads to more lifting work when loading: heavy boxes or furniture must be lifted higher, making loading more strenuous and less practical for some cargo.

On the other hand, a higher load floor can offer benefits in protection against road dirt or easier reachability for ergonomically standing cargo, but it does not change the increased physical strain when lifting.

The other differences (e.g., +2.8 in trunk length with the first row seats upright in the Opel, +2.4 in opening height in the Opel, +3.1 in narrowest width and +2 in opening width in the BMW) are under 10% and thus less significant.

In short: Opel is noticeably more practical for tall and heavy cargo due to greater interior depth and lower loading edge; the BMW offers slight advantages in loading opening width and might accommodate wider items slightly easier but has the disadvantage of more lifting effort with heavy or tall loads.