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Mine says 31 and I always drive it 90+ whenever I'm on the highway. Plus when I'm in 35 and 45mph zones, I'm doin' atleast 60. That's why I don't think that 72 is possible. You'd have to live "on top" of the freeway and never drive it anywhere else besides the highways and even then...............
Of course it is. So is 100. You are forgetting that the avg speed function is not the car's avg speed since the day it left the assembly line; it is simply the avg speed since last reset. So reset the computer, get on the highway, drive at 70+ for a few miles and check your avg speed. Let me know what that says.
wow, why is 72 so inconceiveable? I drive around 100 miles a day, and about 93 of those are on the highway (93% of my miles). Assume I do 78 on this highway on average (fluctuates from this), and a low average of 30 on the side roads. So simple algebra tells us:
(78 mph * .93) + (30 mph * .07) = 74.64 mph
The difference could account for the short time I am going through the tolls, or at a stop.
My car is a daily driver but it is 90% highway. I never reset it since day one & I test drove it in the city at 3 miles to 7 miles before buying. I went from South Louisiana to Tunica, MS last month and people average 85mph on I 55 so that might have a little influence also.
Averaging above 50 mph for over 6000 miles! Awesome and unusual. Now, what milage do you get and how many miles do you do between fill-ups?
BTW, my usual ave. speed(I reset at every fill-up) is 35-36 with little city, little freeway and mostly back country roads that require a lot of shifting.