Took my 2011 5 door Limited with SPT exhaust on a little trip round trip from school to my house and back. ~90 mile drive each way (60 miles highway, 30 miles around town). I was having fun on the drive there, so I only got 21.6 mpg. On my way back to school however, I kept it under 3000 rpm and managed a hand calculated 28.1 mpg. Trip cpu peaked at 29.1 mpg. Speed was kept to 60-70 range on the highway. A/C off, windows up, moonroof closed.