The Odyssey achieved 26.8 mpg on 1500 mile trip with AC set at 72 degrees, speed 65 mph, cruise on, tire pressure 35 psi, some hills, some stop and go, 91 octane gas. 25.0 mpg commuting to work, mostly interstate with some stop and go. I drive in eco mode as much as possible. Michlelin LX4 energy-saving tires sing badly on some types of concrete highway but otherwise acceptably quiet. Comfortable long distant hauler which gracefully replace our 96 Lexus 400 due to Odyssey tradeoffs in size, seating height, features (nav).
The Nav system is very useful traveling and easy to use. XM radio great during long trips.
Improve front suspension to eliminate small front rattles while going over rough pavement.