Sure you can have an instance of 34 mpg @ 80 mph, backing off from 90 mph or running downhill you can do even better. My gfs Peugeot will show 999mpg with the car running downhill and the throttle backed off. Turn the car round and go uphill into a headwind and you probably won't like what you see!.

Roger.

i was just cleaning out my phones sd card and found this video... if i remember correctly i did avg about 35mpg on the way up there... so maybe the instant is right sometimes? lol. its got me confused now. i originally intended this video to demonstrate mpg with and without a/c on. be and a friend have an ongoing debate about windows vs ac lol.

[YT]http://www.youtube.com/watch?v=s5wt9vS7tKA[/YT]

if i reset my average meter when i get gas its usually 1.5-1.8 over doing it with a calculator. watching the instant one doesnt really help much because its all over the place. maybe checking if the a/c is better would work but it would have to be on a flat stretch where you can keep your throttle steady

se i wish it were this easy for all my cars..the fuel guage in bubba hasnt worked for a long time but i know on 25 gallons of gas i can go 250 miles in the city and 350 if all highway usually about 300 combined so if you do the math thats 10 mpg city 14 hwy and about 12 combined