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MPG with a Cargo Box?

Discussion in 'Gen 2 Prius Fuel Economy' started by camthelamb, Jan 26, 2018.

  1. camthelamb

    camthelamb Junior Member

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    Curious about people's experience with a cargo box on top of their prius. How many mpg on average did you lose with a cargo box?

    I'm considering a thule cargo box and will be going on an extended road trip.
     
    #1 camthelamb, Jan 26, 2018
  2. Lucifer

    Lucifer Senior Member

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    #2 Lucifer, Jan 26, 2018
  3. camthelamb

    camthelamb Junior Member

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    Not a bad idea, but I imagine with the added back-end weight and drag, you're losing around the same MPG. Also, extra wear on the back tires / potential for loss of stability.
     
    #3 camthelamb, Jan 27, 2018
  4. Kurt Weiske

    Kurt Weiske Active Member

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    I bought a Sportrack rack and Yakima RocketBox Pro 12. I took about a 4-6 mpg hit, but that was also driving 70+ mph for long stretches.
    20170614_114018.jpg
     
    #4 Kurt Weiske, Jan 28, 2018
    camthelamb likes this.
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