2012 CLS550 nothing wrong with it. I dont get to enjoy it. I only drive 4 miles one way to work. The milage will change some, but not much. It has the distronic cruise control. Night vision. Heated and cooled seats. Navigation. Plays mp3s. Harmon Kardon factory stereo. Fully loaded. Has everything. Has 402 hp. But will get over 28pmg on highway and about 20-22 on town.