Will SYVDE Dressing table, white, 39 1/2x19 " fit in an Alfa Romeo 159 2010?

The 159 gives you plenty of height at the opening and less width than you would like. The mouth measures 36⅝″ wide by 50¾″ tall, so tall boxes go in easily, and the floor matches it at 36⅝″ across its narrowest point. Length runs 40⅛″ with the seats up and 69⅝″ folded, a gain of 29½″. Wide, rigid cartons are the ones that fight you here. The sill is 30⅜″ off the ground with a 9⅞″ drop to the floor, so lift over the lip and lower, rather than sliding.

The SYVDE dressing table splits into two flat cartons, and the larger one measures 41¾″ × 19½″ × 2¾″: a long, thin board more like a shelf than a box. The length and the weight are what catch you out, 77 lb 10 oz across the pair, so neither carton is a one-hand lift. Flat-pack panels like these stay rigid and will not flex around a wheel arch, but they slide easily on their backs. Any hatchback with the seats folded, an estate, or an SUV takes it without drama. Load the heavier box first, lay it flat, and guard the white edges with a blanket.