“The familiar 3.5-liter gasoline V-6 gets direct fuel injection and a robust output increase, from 268 hp to 302, and 258 lb-ft of torque to 273. However, the bigger news is the GLK250 BlueTec diesel, available in the U.S. only with 4MATIC four-wheel drive. With a debut set for early 2013, the diesel’s pricing hasn’t been announced, but Mercedes execs hinted that it should slot in above the base rear-drive GLK350 ($37,995) and below the GLK350 4MATIC ($39,995). The gas-powered models will be available later this summer.”
“The 190-hp diesel makes distinctly diesel noises and vibes, although it’s a distant, well-muffled clatter without a lot of tick-ticking in it, thanks to those pricey (and quieter) piezo injectors. As advertised, the max of 369 lb-ft torque is available nearly instantly (from 1600 rpm to 3000 rpm), and the GLK250 pulls away from a stop with the kind of assertive, confident thrust that we’ve come to expect from modern turbo-diesels.”
“No major changes are notable in the GLK’s composed handling. This is a compliment, in light of the switch to electromechanical steering, which gives precise helm control if not lively feedback and lets you cut clean ellipses through corners with good grip and body control.”
You can read the full review at Car and Driver online.