We're looking at buying a CX-9 Touring model and were going to go with the 2010 to get a better deal (~$1500), but the 2011 is rated 17/24mpg while the 2010 gets 16/22mpg. Is this a matter of the EPA test procedure changing or is there really a difference in the control module or something that accounts for a real improvement, small though it is? Thanks!