Trunk comparison: Audi A3 Sportback vs Hyundai IONIQ

Key Differences

The data reveals three notable differences: The Hyundai IONIQ offers a cargo space length that is 5.5 in (≈18%) longer with the first row of seats upright than the Audi A3 Sportback.

On the other hand, the Audi A3 Sportback has a trunk opening that is 4.3 in (≈17%) higher as well as a depth between the loading edge and trunk floor that is 1.6 in (≈33%) greater than the IONIQ.

Smaller deviations (e.g., +5.5 in/9% with folded seats, +2.8 in/10% higher loading edge on the IONIQ, width differences of 1–1.2 in) exist but are clearly below the 10% mark or exactly at 10% and are not highlighted here.

Implications for Usability

The longer cargo space of the IONIQ with the rear seats upright makes it more practical for longer items in everyday use when the seats remain occupied (e.g., skis, long boxes, or pipes). Those who regularly transport cargo without folding seats benefit from the IONIQ.

The higher trunk opening of the A3 facilitates loading tall or bulky items: larger vertical clearances and fewer head or angle issues when lifting boxes or furniture parts.

The significantly greater depth (loading edge → trunk floor) in the A3 creates more internal space and allows for deeper storage of luggage, making more volume usable and keeping cargo more stable. At the same time, a deeper interior can mean more bending is required when lifting items out.

The slightly higher loading edge of the IONIQ (not highlighted) makes lifting heavy items somewhat more strenuous, while the width differences between both vehicles are so minor that they are hardly noticeable in everyday use.

In short: IONIQ = better for longer cargo with rear seats occupied; A3 = advantageous for vertical clearance, deeper interior, and transporting bulky/tall items.