Mud flaps affect mpg?

[greenweever]

I just installed the ford mud flaps. I noticed, especially with the rear, they somewhat look like sails sticking out the side. Any thoughts on them affecting mpg?

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[NewMavIL]

I installed those on my hybrid a couple months after getting the truck. I didn't lose any mpg or notice any wind noise added.

 

[Joe Kelly]

your weight will do more to decrease the mileage than mud flaps. If you load it up with 1500#’s you will see a reAl reduction in mpg.

 

[rlhdweman]

I just installed the ford mud flaps. I noticed, especially with the rear, they somewhat look like sails sticking out the side. Any thoughts on them affecting mpg?

You don't have them sticking out farther that the tires do you? I put Rokblokz on mine & didn't notice any difference in mileage.

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