Air deflectors-good or bad for FE?
Hybrid and Ethanol Expert
Joined: Mar 2005
Posts: 3,616
From: All over the Central U.S.
Re: Air deflectors-good or bad for FE?
Anything that makes your car wider or taller is bad for Fuel Economy.
More so at higher speeds.
If you like them tho... go for it. Your MPG loss will probably be too small to notice, and will proably "cost" you 1 gallon extra per year... or less....
-John
More so at higher speeds.
If you like them tho... go for it. Your MPG loss will probably be too small to notice, and will proably "cost" you 1 gallon extra per year... or less....
-John
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Pretty Darn Active Enthusiast
Joined: Nov 2007
Posts: 322
From: Rhode Island
Re: Air deflectors-good or bad for FE?
Ridiculously Active Enthusiast
Joined: Mar 2006
Posts: 942
From: Ventura, CA
Re: Air deflectors-good or bad for FE?
I have them on my FEH, with no observable change in FE. I also removed the roof rack and installed the factory tracks, again no observable change to FE. Probably same with mudflaps, all these things do affect FE but not enough to be noticeable in normal street driving. However tire pressure does make a measurable change in FE.
Thread Starter
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Pretty Darn Active Enthusiast
Joined: Nov 2007
Posts: 322
From: Rhode Island
Re: Air deflectors-good or bad for FE?
I have them on my FEH, with no observable change in FE. I also removed the roof rack and installed the factory tracks, again no observable change to FE. Probably same with mudflaps, all these things do affect FE but not enough to be noticeable in normal street driving. However tire pressure does make a measurable change in FE.
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