Proud new owner of a 2011 EX with Nav, picked it up down in Phoenix which sits at about 1300 feet MSL. Drive back home 264 miles...250 miles up hill across 9300 feet and downhill for last 14 miles to my home elevation of 7055 MSL. Did the trip well but do have to hammer it hard on some of the steepest grades. Overall 43.1 hand calculated which is about 2 mpg less than the onboard computer wanted me to believe. All in all not bad. Have since filled up in home town and done my usual commute which is from 7000 to 9300 and end back at 6900 feet on the other side. Return back home same route which total covers 112 miles and am showing 55.4. Will complete the tankful and see where we sit calculating by hand. Really pleased considering at high altitude and cold weather is already here with early morning temps 18-24 or so for my commute. I do baby her and try to stay at about 52-55 mph and utilize a bit of preemptive acceleration as i begin ascending the mountain.