Trunk comparison: BMW X1 vs VW Golf Wagon (Mk5)

Key Differences (highlighted: >10%)
The VW Golf 5 offers a significantly longer trunk with the first row of seats upright: +5.9 in (≈17%) compared to the BMW X1. Additionally, the trunk depth (from the loading edge to the trunk floor) of the Golf is 0.8 in, or ≈67% greater than that of the X1. On the other hand, the loading edge of the BMW X1 is 2.8 in (≈11%) higher above the road than that of the Golf.
Impact on Usability
Due to the significantly greater length with the rear seat upright (+17%), the Golf is more practical in everyday use with passengers: longer items (e.g., skis, long boxes) can be transported more often without folding down seats.
The considerably greater trunk depth (+67%) means the Golf has a deeper loading area, allowing better use of volume for bulky or tall items behind the loading edge; at the same time, a deeper load floor profile can make handling very heavy items somewhat more difficult because more lifting height is required.
The higher loading edge of the BMW X1 (+11%) directly affects loading and unloading: heavy luggage or groceries must be lifted higher, making loading and unloading more strenuous.
On the other hand, a higher loading surface can offer advantages in some uses (e.g., better access for trunk-high cabinets or less bending for certain heights), but for frequent lifting, the Golf with its lower loading edge is more practical.
In summary: For everyday use with passengers and frequent loading of longer or bulky items, the VW Golf 5 is generally more advantageous due to greater length and depth. The BMW X1 has a higher loading edge, which is disadvantageous for lifting heavy loads in some uses.