well i know I've read that there was a definite difference between the Eco/ LTZ, for the obvious reasons. I just didn't know if mpg progressively stepped down for each uptick in trim levels for whatever reason(weight?). Also,Im currently eyeing a 2lt w/RS & auto and the ad lists 22/34 for mpg while others list 26/38... This one does have heated leather and a sun roof if it makes a difference and I think 17"
