Trunk comparison: BMW X3 vs Seat Tarraco

Main Differences

There are two notable differences in trunk volume: With the first row of seats upright, the SEAT Tarraco is 6.7 in (18%) longer than the BMW X3, which means more usable loading length with the rear seats occupied.

Additionally, the trunk depth (from loading edge to trunk floor) in the SEAT Tarraco is 2.4 in (500%) greater than in the BMW X3, a very large relative difference regarding the distance from loading edge to floor.

Impact on Usability

The 18% greater loading length with the seat row upright makes the Tarraco more practical for long luggage or sports equipment without folding down seats — such as skis, long furniture parts, or several large suitcases.

For users who often transport a full load of passengers and still want to carry longer items, the Tarraco is clearly better suited for everyday use.

The significantly greater depth between loading edge and trunk floor in the Tarraco means more space behind the loading edge to store taller or deeper items and makes stacking inside the trunk easier.

Practically, this means bulky or tall cargo sits lower in the cargo area and can be stably accommodated. However, the Tarraco's loading edge is overall somewhat higher (about +2 in), which makes lifting heavy loads in a bit more strenuous.

Smaller differences under the 10% mark moderately affect usability: The BMW X3 is about 3.5 in wider at its narrowest point, which is advantageous when loading very wide items, while the Tarraco's trunk opening is slightly wider and a bit taller, making it somewhat easier to insert bulky objects.

However, these points are less decisive than the two highlighted differences in length and depth.