I agree the tempt here in NC finally dropped below 90 and the humidity dropped below 100% and my AVG started climbing almost immediately. 32" your running are about 5% error. I did the math once correcting the mileage and such so for me I add 2mpg to my average read out and thats my correction so my dash is displaying 12.6 right now so I add 2 which gives me 14.6MPG. Now that is running with no cargo on slightly hilly roads but mostly open with maybe a couple of stop lights once and a while.