If Mercedes won’t AMG your GLK, you’ve just got to do it yourself. They started by removing the GLK’s standard 3.5-liter V6 and replacing it with a 5.5-liter V8 from a 2010 E550.

Becoming the fourth active Mercedes-Benz badged sport utility vehicle sold in the United States for the 2010 model year, the GLK-Class was positioned at the entry-level of the premium brand's product ...

Ride quality; towing ability; some off-road ability without sacrificing ride; performance from ML63 AMG; fuel-efficient Bluetec model and ... market matures in 2010 with the addition of the new GLK. A ...