Aero deflector

[Kururu]

I bought the truck with this air deflector already on it and i was wondering if this helped the aerodynamics or if it will decrease my gas mileage?

[saunders1313]

It doesn't look like it's really an aero deflector as much as a rock deflector. I don't think it's going to help your mpg. Can you take it off and test a couple of tanks with it on and with it off?

[tasdrouille]

It does not help for sure. On the other hand, I've never seen anyone quantify how much it hurts.

[FunkSkunk]

I think the point of those is to be a bug deflector to keep your windshield clean.

[Red]

Looks too small to be a big deflector. I 2nd saunders1313 suggest of running it off on a couple of tanks and see if there is a difference.

[i_am_socket]

I agree that it looks more like a rock deflector than a bug deflector. Guess they decided it looked better than a truck bra?

[Montana1]

I have a Jeep Patriot and was thinking a deflector like this might help my areodynamics. If it is a "bug deflector" doesn't that keep the air from gathering on the windshield and keep it up and over the vehicle??

[FunkSkunk]

well whatever it is, take it off and put it under your bumper to deflect some more air around your undercarriage!