Quote:
Originally Posted by annoyingmouse
I made this trip again, but this time with a more seasonally appropriate south wind. Going north on 37 with a ~20MPH tail wind, I averaged 30MPG according to the trip. Coming home, with a ~15MPH head wind, I averaged 24 MPG according to the trip. I used the Cruise control set to an indicated 79MPH which my GPS speedometer app says is 75.2-75.8MPH.
I guess our engine doesn't like our parachute of a bumper.
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75 mph is also far above the maximum speed that the EPA tests are done with, and will incur higher fuel consumption than lower speeds. I'm surprised you got as good results as you did.
A non-car-specific EPA estimate is that if you get 32 mpg doing 50 mph, you'll only get 23 mpg doing 75 mph.
