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Old 01-05-2008, 11:02 AM   #1 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,890

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 57.23 mpg (US)
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SAE report: Pickup Truck tailgate aerodynamics... better up, down, or off?

Posting this link because it addresses the age-old search query: will I get better fuel economy with my truck's tailgate up, down, or removed entirely?

It's also one of the better/most comprehensive studies I'm aware of.

Pickup Truck Aerodynamics – Keep Your Tailgate Up



http://ecow.engr.wisc.edu/cgi-bin/ge...hi1/pickup.pdf

The author concludes that, on average, it's best to tell all pickup owners to leave the tailgate up.

If you read the report, the most accurate answer to the question is: "it depends".

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