Trunk comparison: BMW 3 Series Touring vs Mercedes Benz GLC

Key Differences

With the seats folded down, the loading lengths of both models are the same. However, with the first row of seats upright, the BMW 3 Series Touring offers a longer cargo space by +2.8 in (≈8%).

The trunk opening of the GLC is +1.6 in (≈6%) taller, while the depth (loading edge → trunk floor) is minimally larger by +0.4 in (≈0%) in the BMW.

Significant differences (>10%): The loading edge of the Mercedes‑GLC is +4.3 in (≈18%) higher above the ground, and the width of the trunk at its narrowest point is +5.9 in (≈16%) greater in the GLC.

Additionally, the width of the trunk opening is +3.9 in (≈10%) larger in the GLC (not a highlight since it is exactly 10%).

Impact on Usability

Due to the significantly greater interior width at the narrowest point (+5.9 in), the GLC is better suited for wide or bulky items (e.g., boxes, larger suitcases, or wide furniture parts). The slightly wider opening (+3.9 in) further facilitates loading such items.

The higher loading edge of the GLC (+4.3 in) makes lifting heavy loads more strenuous when loading and can complicate loading heavy, flat items—especially compared to the lower entry height of the BMW, which is clearly more manageable here.

Since the folded-down lengths are identical, both vehicles are equally suitable for very long items. With the rear seats upright, the BMW offers an advantage for longer, narrow cargo (+2.8 in) (such as long skis or slats), while the GLC scores better with wider loads.

In summary: For wide, bulky cargo, the GLC is the more practical choice; for easier lifting, frequent loading/unloading, and longer, narrow items, the handling and length utilization of the BMW 3 Series Touring speak in its favor.