The interior layout is familiar to Mercedes drivers, with either faux or real leather trim for the seats (Mercedes notes that not all luxury car buyers want real leather seating surfaces), wood trim and metal rings around gauges, air vents, and cup holders.
The second-row seats provide ample legroom. When occupied by only two people, the back of the center section can be folded down as an armrest and storage tray.
We climbed into the third row and found room for two adults to ride back there, each in a separate seat. The room is enhanced by foot wells for your feet so you don't sit with your knees at chest level, and even the third-row seats are thickly padded to provide comfort. Fears of claustrophobia back there evaporate quickly thanks to the sunroof that extends over the third row.
The GL can be equipped with a 440-watt, 11-speaker harman/kardon Logic 7 sound system, with Sirius Satellite Radio and with a DVD video entertainment system with screens mounted in the rear of both front-seat headrests and with a 6CD changer.