A quad coupé is a car body style featuring bi-parting side doors – located either on one or both sides of the vehicle. The bi-parting doors typically feature a longer front door and a short rear door, without a pillar in between. The configuration offers the utility of a 4-doors, though the doors operate inter-dependently. The forward door must always be opened before the rear-door – which opens in a rear-hinged fashion – can be opened.