The SUV has benefited from a mid-cycle facelift following three years of sales and a new clean diesel version has been introduced to the GLK line-up.

Ahead of its scheduled unveiling at the New York Auto Show next month Mercedes has released the first images and details of the new 2013 GLK-Class. The compact SUV benefits from a mid-cycle facelift and a new clean diesel engine.

The new engine will be found in the GLK250 Bluetec 4Matic in early 2013. The twin-turbocharged 2.1-liter four-cylinder unit produces 201 hp (150 kW / 204 PS) and 500 Nm (369 lb-ft) of torque and will only be available in four-wheel-drive.

The engine line-up is also complimented by an upgraded version of the naturally aspirated 3.5-liter V6 unit of the GLK350. Power output has been raised by 34 ponies up to 302 hp (225 kW / 306 PS) whilst torque is rated at 369 Nm (273 lb-ft).

The facelifted GLK is easily distinguishable from the outgoing model by its new front bumper fascia with remodelled fog-lights as well as revised LED infused headlights. The wheels have also be refreshed along with the new taillights.

GLK customers also have the opportunity to purchase an AMG Exterior Sports package. It includes
AMG front and rear aprons, a specific radiator grille with chrome accents, AMG LED daytime-driving lights, 19-inch AMG 5-spoke light-alloy wheels and a sportier suspension setup.

Sales for the facelifted 2013 Mercedes GLK-Class are due to begin in August, but pricing is yet to be announced.