Two tall adults will have room to spread out in the front seats, while another two, rather than three, adults will sit in decent comfort in the back seats. Six-footers will find their heads near, but not brushing, the ceiling and their knees clear from the front seatbacks. Overall, rear space is similar to the rival BMW X4.
All GLC Coupés come with four decent-sized door pockets and the front passengers benefit from a large cubbyhole beneath the front armrest as well as a sizable cubby beneath a flap in front of the infotainment rotary controller for keys and wallets.
The GLC's boot matches an X4’s and Porsche Macan’s for on-paper space, but both the Mercedes and BMW's sloping rear rooflines make loading tall items more difficult. The Macan’s more squared-off design makes for a more practical luggage bay.