"Good things come in small packages," is a mantra Mercedes-Benz has taken to heart, as evidenced by their compact SUV, the GLK. The 2013 model got some tweaks inside and out. There is also a new powertrain, a 2.1L turbocharged four-cylinder diesel with 200 horsepower and 369 pound-feet of torque. Even more impressive are the EPA fuel economy numbers of 24 City/33 Highway/28 Combined. Autobytel's Road Test Editor, Daniel Gray, gives us some thoughts on this diesel SUV.