Hi all, I just purchased an Ascent Limited last weekend and was super excited about it until I started driving around town and am only getting 13 mpg! I've looked around these forums and most people seem to get 17-20 mpg in the city. I'm not even sitting in stop and go traffic, just short trips on neighborhood streets. I'm driving really conservatively -- not accelerating too quickly and coasting where I can. The car also feels like it drives a little different than the one I test drove and the engine is making noises like I'm not in the right gear. I keep checking to make sure I'm in Drive rather than one of the lower gears with everything going on. Did I get a lemon? Thanks!