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Old 12-06-2017, 02:57 PM   #4 (permalink)
redpoint5
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Join Date: Aug 2010
Location: Oregon
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Acura TSX - '06 Acura TSX
90 day: 28.07 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 23.74 mpg (US)
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Generally the gains from fuel economy at altitude are mostly due to lower wind resistance, and less from reduced pumping losses.

Different vehicles will be affected in different ways. A turbocharged vehicle will cope with the thinner air better than a NA vehicle.
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