I am consistently getting 33-34 mpg. That is back and forth to work (14mi. 1 way) and around town. The lowest I got was pulling a UHaul 5'x 10' trailer to Bismarck, ND. It got 23 mpg with the trailer empty. Loaded I got 27 mpg on the way back with a tail wind. This was all driving at 65-75 MPH!
"Sync" system. Bluetooth cell phone. Steering wheel radio and media controls. Oil filter and drain access.
Larger sun visors. Passenger side seat belt holder(it rattles on the interior if no one is in the seat). Power "up" windows. Better head rests. Trunk unlatch lever in cabin. Gas door unlatch in cabin. Ditch the mood lighting. Better sound insulation. Mud flaps. At least for the front wheels.