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Roof Racks and MPG
I just saw an TV news interview with a Consumer Reports writer. It had to do with gas mileage. The editor said a new Camery with and without a roof rack showed a 5 mpg difference at speeds of 65 or greater.
I have the factory roof rack. I never use it. I may remove it for longer trips. |
RE: Roof Racks and MPG
I do not have a roof rack (yet) on my H3. I did have them on all my Land Rovers and yes they cut the gas mileage down considerably. I cannot say by 5 MPG but I would say yes to 3. Take it off and see what happens. I got 20 plus on the highway in my H3 then I raised the front end (leveled) and I lost 2 MPG! So I gess the more you do the more you suffer at the pump!
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RE: Roof Racks and MPG
I dropped my H3 by 3" at the corners so my elderly Mother could get in. I imagine that should help my MPG also. I improved the intake and exhaust plus a PCM tune. I need to check my MPG so I can see where I'm at. But I think 20mpg would be a stretch for me.
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RE: Roof Racks and MPG
Anything that adds "drag" to the truck is going to affect the MPG. That's alot though. I don't have one on my 3 but my wife has the OEM cross bars on hers. No difference that I can tell. Of course they are pretty streamlined and light. It was posted in the FAQ's section at the top of the H3 section about brushguards. I believe someone quoted that for every 100 lbs you add you lose 1 MPG. IDK, I don't have enough on mine to start dropping enough weight to make a difference.
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RE: Roof Racks and MPG
As has been stated on here many times by many guys, "It's hard to make a brick aerodynamic." Your H3 is build like a brick, it gets the fuel mileage of a brick and just about any weight you add to it or anything you put on it might affect mileage. Some roof racks, like the ones I had on my Ford Explorer, did not adversely affect mileage because they were shaped like a wing and when they were cutting through the air they acted like a foil flowing the air across the top of the truck and not creating a vortex. Some changes are good!
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RE: Roof Racks and MPG
ORIGINAL: RealJeep As has been stated on here many times by many guys, "It's hard to make a brick aerodynamic." Your H3 is build like a brick, it gets the fuel mileage of a brick and just about any weight you add to it or anything you put on it might affect mileage. Some roof racks, like the ones I had on my Ford Explorer, did not adversely affect mileage because they were shaped like a wing and when they were cutting through the air they acted like a foil flowing the air across the top of the truck and not creating a vortex. Some changes are good! anywho, as a starting point, i have roof cross bars and nerf bars/side step bars and get 18mpg, about 1/2 highway and 1/2 city (consistently by my own calculations over several trips to the pump). mind you, i drive very conservatively - slow on the gas and the brake, with coasting whenever feasible. highway speed averages 65-70. |
RE: Roof Racks and MPG
I never worry about it, but on my next roap trip I'll take them off just to see if they make a difference.
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RE: Roof Racks and MPG
I have not noticed that much of a difference. Obviously adding weight and drag will have an impact on the mpg but I wouldn't say mine was noticeable
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RE: Roof Racks and MPG
I wonder how brush guards impact MPG?
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RE: Roof Racks and MPG
ORIGINAL: ChevyHighPerformance I wonder how brush guards impact MPG? |
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