Cargo space is ample—and aided by Mercedes-Benz's choice to reserve three-row seating for larger vehicles. With the seats folded forward, the cargo space is almost perfectly flat and measures nearly 66 inches long; and with the back seat up there's still a very respectable 23.3 cubic feet.
The Mercedes-Benz GLK combines a high-quality interior with a comfortable and usable cabin that luxury buyers will appreciate. There's nice trim and detailing throughout; though given the lower price point, it's not surprising that the interior appointments, up close, aren't quite up to the level of those in M-B's larger and more expensive SUVs.
Mercedes-Benz has tuned the GLK's suspension to be taut but well damped; it doesn't allow the GLK much body motion, but the suspension will soak up most roughness from the road and the cabin stays tight and quiet even over rough roads or in high-speed cruising.