MAXIMUM luggage capacity for the A4 has increased to 445 litres when the seats are upright and to 720 litres when the standard 60/40 split-fold rear seat is folded. Only the seatback portions will fold, meaning neither a flat floor nor a barrier between the cockpit and extended cargo area is possible. The boot is fully lined, uses non-obtrusive struts, has a deep storage bin in the left-hand cavity, a full-size spare under the floor, warning triangle underneath the bootlid, two boot lights and neatly stored jack and toolkit. Maximum width of the boot floor is 1400mm though usable width (distance between the wheel arches) is 1000mm. The boot aperture has a 920mm maximum width, while the length of the boot floor to the upright seatbacks measures 1100mm.