While I don't concern myself overly much about fuel economy,
Normally fuel economy doesn't bother me, but 2 mpg saves me $10 per hunting / family vists up north. I never thought about it until I a guy at a gas station with 09 chevy told me he can get 23 mpg if he takes it easy on the gas. I have a topper on mine so I don't know if that hurts it or not.
All I remember is I thought I found a pot of money When I sold my 13 mpg ford truck and got this chevy!
Sadly... nothing saved me as much fuel hunting trip money as when I used to drive my little car up north for grouse hunting and it saved $250 a fall over my 83 chev pickup I had then!