Will VÅGSTRANDA Pocket spring mattress, medium firm/white, Queen fit in a Toyota Corolla 2019?

The Corolla gives you a saloon boot: long once you fold, but pinched at the back. The opening is 39″ wide × 30⅜″ tall, and the floor runs 31⅞″ with the seats up, reaching 59⅞″ folded, a gain of 28″. The catch is the narrow point of 26⅜″, where the wheel arches close in, so wide boxes can jam even when the length is fine. The sill sits at 28¾″ with a 7½″ drop. It takes suitcases and medium boxes happily, long flat-packs only with the rear seats down. Load the widest item first, before the space narrows.

VÅGSTRANDA ships as one box, and it is a heavy one: 65¾″ × 17¾″ × 17¼″ at 109 lb 6 oz. IKEA rolls and compresses the queen mattress, so instead of a floppy slab you get a short, dense block that two people can carry and one person will regret. The length is friendly; the weight is the problem, and the box gives you no handles. Most hatchbacks take it with the rear seats folded, and a wagon or SUV swallows it without drama. Load it last, on its side, so it slides straight out at home, and keep the wrapping sealed until the bedroom: once it expands, it never rolls back up.