The GLK-Class compact crossover from Mercedes-Benz has been redesigned for 2013, receiving significant exterior and interior styling changes, upgraded infotainment functions and a more powerful, yet fuel-efficient engine and the addition of a diesel. The result is over 1,000 new parts, according to Mercedes. The extent of the changes is a bit surprising, since the GLK was introduced just a couple of years ago, but it will likely help boost its Total Car Score rating. The 2012 Mercedes-Benz GLK-Class was rated 78.42, completely in line with the segment average of 78.63. Here's what might boost the 2013 Mercedes-Benz GLK-Class to a higher Total Car Score.

The redesigned exterior is sportier, harkening some of the design elements from Mercedes popular sedans including short overhangs, slender roof pillars and a taut roof line. Both the front and rear ends have an updated look with new headlamps with chrome-trimmed LED daytime running lights, a grille that echoes the current passenger car design as well as redesigned taillights and chrome accents on the skid plate and tailpipe.

The interior has been reworked and now includes more upscale materials. The dashboard has been completely redesigned, featuring a single piece of burl walnut with new round air vents to create a more elegant look. The Direct Select shift lever has been relocated from the center console to the steering column, while a new set of cup holders is in its place. New upholstery colors and materials are offered as is LED fiber-optic lighting.

In terms of comfort and convenience, the 2013 Mercedes-Benz GLK-Class now includes a six-speaker audio system with single CD and Bluetooth interface all controlled via a 5.8-inch display as standard equipment. An optional package upgrades to a 7-inch display with a rearview camera, as well as enhanced voice control and Mercedes COMAND system with navigation. Also available are a Harmon Kardon surround sound system, SIRIUSXM satellite radio and an iPod/MP3 media interface.

On the safety front, the GLK gets a new Lane Tracking package, which combines Blind Spot Assist and Lane Keeping Assist. Mercedes PARKTRONIC with Active Parking Assist and KEYLESS-GO systems are available as standalone options.

The five-seater continues to come in both rear-wheel and all-wheel drive configurations, referred to as the GLK350 and GLK350 4MATIC respectively. Both versions are now powered by a 3.5-liter V6 that produces 302 hp and 297 lb-ft. of torque, featuring the ECO stop/start system to improve city fuel economy. New for 2013 is the GLK250 BlueTEC 4MATIC, which features a direct-injection 2.1-liter diesel that generates 190 hp and 396 lb-ft. of torque in an all-wheel-drive configuration. Both engines are paired with a seven-speed automatic transmission.

The 2013 Mercedes-Benz GLK-Class will arrive in showrooms this summer. The 2013 Mercedes-Benz GLK250 BlueTEC will be available in early 2013.

Here's what others are saying:

Automobile: "The 2013 GLK-Class wears a new face that includes more aggressive chrome skid plates, revised headlights with LED running lights, LED taillights, redesigned wheels, and new exhaust tips. As a result, the SUV looks more like other new Mercedes vehicles. On the inside, dull square air vents give way to circular sculpted chrome designs, similar to those seen on the 2013 SL-Class roadsters."

Autoblog: "Like the existing GLK but not such a fan of its incredibly boxy styling? Or like the styling just fine but just wish it had a diesel? Well we've got good news for you, friends, because Mercedes-Benz has just taken the wraps off a revised model that aims to remedy both."

Cars.com: "The space opened up by the gearshift is now a paltry storage bin. Outfitted with an ashtray and cigarette lighter, the show car barely had enough room for my iPhone. The glove compartment and center console make up for it, though; they’re a decent size."

MotorTrend: "At first glance, it doesn't look like much was done to the revised 2013 Mercedes-Benz GLK-Class crossover, short of the usual mid-cycle nip/tuck. But according to Benz, the GLK-Class, which is heading to the 2012 New York auto show, boasts more than 1000 new parts, most notably a stout new 2.1-liter, four-cylinder diesel with an impressive 190 hp and 369 lb-ft of torque."