2010 Mercedes-Benz GLK-Class is powered by a 3.5-liter V6 that produces 268 hp and 258 pound-feet of torque. Rear-wheel with seven-speed automatic that features Sport, Comfort and Manual modes. Fuel economy for the 4Matic-equipped GLK is 16 mpg city/21 mpg highway and 18 mpg combined. This GLK features Mercedes' latest COMAND electronics interface for the stereo. Bluetooth phone, COMAND's redundant controls -- physical dash buttons, steering-wheel controls, multifunction knob and display screens -- are at least a reasonable solution for performing a variety of different functions. The climate controls are remarkably simple and are located low in the center stack to allow for easy access. Engine & Performance Base engine size: 3.5 L Cam type: Double overhead cam (DOHC) Cylinders: V6 Valves: 24 Valve timing: Variable Torque: 258 ft-lbs. @ 2400 rpm Horsepower: 268 hp @ 6000 rpm Turning circle: 37.7 ft. Base engine type: gas DriveTrain Drive type: rear wheel drive Transmission: 7-speed shiftable automatic Brake hill holder Safety & Security 4-wheel ABS Front and rear head airbags Dual front side-mounted airbags Child seat anchors Remote anti-theft alarm system Emergency braking assist Front and rear ventilated disc brakes Daytime running lights Engine immobilizer Front fog/driving lights Auto delay off headlamps Dusk sensing headlamps 2 front headrests 3 rear headrests Passenger airbag occupant sensing deactivation Rear center 3-point belt Front and rear seatbelt pretensioners Turn signal mirrors Stability control Traction control Electronic brakeforce distribution Front height adjustable headrests Rear height adjustable headrests Passenger head restraint whiplash protection system Emergency braking preparation Driver head restraint whiplash protection system Tire pressure monitoring Brake drying