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Author Topic: Trucks - tailgate up is better Back to Topics
WEPSMAN

Champion Author
South Dakota

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Message Posted: May 27, 2013 9:39:07 PM

Here is a link for testing done on the 2014 Sierra. Wind tunnel shows less resistance with tailgate up.

http://www.foxnews.com/leisure/2013/05/20/tailgate-up-or-down-gmc-solves-age-old-pickup-truck-mystery/
REPLIES (newest first) Post a Reply
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Houckster
Champion Author Atlanta

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Message Posted: Jan 19, 2014 8:38:12 AM

OLDHILLBILLYAZ writes: ....worrying about gas mileage and driving a pickup is somewhat counter productive.
_____
Another view: I do everything I can to get the most miles per gallon out of my Ford Ranger. Just like any other vehicle, you get a fuel bill payback with driving efficiently. In the 10 years I've had my Ranger, compared to the EPA expectation, I've saved 865 gallons over 55.7K miles, 55% of which are under city conditions. That, in my view is a substantial payback and most certainly not counterproductive.

Not only does a concerted effort to save fuel save money, it also reduces the greenhouse gas emissions that I believe is also important.

As for the tailgate, I always keep it up. I have a tonneau cover that protects the contents of the bed. It was one of the first things I added to my truck so I have very little idea whether it contributes to fuel efficiency or not.

Finally, you have to drive the vehicle that meets your needs and something like a Ford Focus won't do that. You buy the minimum vehicle that meets your needs. That's a pickup for me.

[Edited by: Houckster at 1/19/2014 8:41:23 AM EST]
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eyegotgas2
Champion Author British Columbia

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Message Posted: Jan 19, 2014 7:46:03 AM

Most people have stuff in the box anyway or they wouldn't need a truck
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hyeglenn
Champion Author Fresno

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Message Posted: Jan 19, 2014 6:19:56 AM

Mine is always up.
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Vin63
Champion Author San Bernardino

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Message Posted: Aug 23, 2013 10:10:17 AM

It depends on the velocity and shape of the truck. Generally, at freeway speeds, the tailgate up will reduce drag as an eddy forms behind the cab. At lower speeds, this does not occur.
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oldhillbillyAZ
Champion Author Tucson

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Message Posted: Aug 23, 2013 3:37:52 AM

I've did my own tests... Myth Busters is whack....
Besides... Tailgate down... big ugly trailer hitch (with guard) makes reading license plate difficult (for cameras)....

Aside from that....worrying about gas mileage and driving a pickup is somewhat counter productive.

If your worried about gas mileage and your not getting 40MPG or better, you need to go back to school.
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Glasman
Champion Author South Carolina

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Message Posted: Aug 14, 2013 9:45:31 PM

if you believe Myth-Busters... up is better !
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waynecz
Champion Author Tampa

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Message Posted: Aug 5, 2013 12:06:30 AM

I have a cover over mine so I am guessing that is even better
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MertieMan
Champion Author Lexington

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Message Posted: Aug 4, 2013 9:12:14 AM

This rag has been worn out for years now, LOCK IT!
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dassfg
Champion Author Fort Worth

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Message Posted: Aug 4, 2013 8:14:35 AM

Tailgate up is correct. Second best option is a Flow through tailgate.
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mybigtruck
All-Star Author San Jose

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Message Posted: Aug 4, 2013 12:21:09 AM

I always keep my tailgate up. I hate it bouncing up and then slamming down when I'm driving over rough pavement. Otherwise, one of these days it'll probably snap itself and the cables off.

The only time I have it down is when I need to clean it out in a hurry...ie fly down the freeway. LOL

I have a hard tonneau cover on the back of my box if I'm not hauling stuff, and I consistently get about 0.5mpg better with it on long freeway shots. That was done on 4 different identical 250mile freeway runs with and without it.

0.5mpg might not sound like much, but when I'm averaging 16-17mpg on the freeway, it's about a 3-4% improvement.


[Edited by: mybigtruck at 8/4/2013 12:28:20 AM EST]
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OceanArcher
Champion Author Mississippi

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Message Posted: Aug 3, 2013 8:43:13 AM

Keep the tailgate up -- stuff doesn't fall out of the bed quite as fast
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RedWings44
Rookie Author Michigan

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Message Posted: Aug 2, 2013 5:51:32 PM

I am not sure that Fox News is the best link to provide however I do know that the Mythbusters did this test a few years ago and found the same thing.

The tailgate up helps the air to create a swirling bubble which allows other air to flow over it. If you put the tailgate down, the bubble disappears and the air comes down on the tailgate producing a great deal of drag. This is especially noticeable on the freeway.
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ranger2k
Champion Author St. Louis

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Message Posted: Aug 2, 2013 1:42:31 PM

been driving pickups for thirty years, never noticed the difference, do not own a car.

[Edited by: ranger2k at 8/2/2013 1:43:10 PM EST]
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gasandgoAL
Champion Author Alabama

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Message Posted: Jul 30, 2013 6:38:11 AM

up always
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FrankLee1
All-Star Author Minnesota

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Message Posted: Jul 30, 2013 2:28:14 AM

Gate up; gate down- who cares. The bigger question is, why are you commuting in a truck?
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dontuknowOH
Champion Author Ohio

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Message Posted: Jul 29, 2013 10:51:14 PM

Being I have a bed toolbox I believe I get better mileage when the tail-gate is completely removed, maybe its the reduced weight factor of the missing tail-gate, don't know.
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skydone7
Sophomore Author Kansas City

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Message Posted: Jul 29, 2013 8:30:44 PM

yep
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Maintroll
Champion Author Lexington

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Message Posted: Jul 21, 2013 9:10:05 AM

This post has been around for years and should be locked. Always have the tail gate up unless you are toting a load of something that extends out. In some cities you can receive a citation for a tail gate being down constantly.
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Banjoe
Champion Author Winnipeg

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Message Posted: Jul 21, 2013 8:37:27 AM

Seems counter intuitive but perhaps this mean that we should install some kind of tailgate on our cars to improve mileage?
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smugutu1234
Champion Author Tallahassee

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Message Posted: Jul 21, 2013 7:49:25 AM

That is the way it was made.
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ricebike
Champion Author New Jersey

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Message Posted: Jul 21, 2013 7:45:29 AM

saw that on mythbusters

having a tonneau cover also helps
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cdnt48
Rookie Author Minnesota

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Message Posted: Jul 21, 2013 6:04:13 AM

yawn
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weddy11
Champion Author Phoenix

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Message Posted: Jul 20, 2013 7:13:29 PM

Keeping it up is the best for gas mileage from what I heard over the years.
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BBF_PFS
Champion Author Washington

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Message Posted: Jul 20, 2013 10:11:00 AM

When is the last time you bought a pickup to get better MPG?
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Xquzme
Champion Author British Columbia

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Message Posted: Jul 19, 2013 2:40:55 PM

Keep it up....
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hyeglenn
Champion Author Fresno

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Message Posted: Jul 19, 2013 11:08:12 AM

I disagree. ..
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FrankLee1
All-Star Author Minnesota

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Message Posted: Jul 16, 2013 9:38:17 PM

Where did science say that?
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GrumpyCat
Champion Author Alabama

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Message Posted: Jul 16, 2013 3:59:09 PM

"The science says that the air will "roll" in the bed and "push" the cab resulting in a net 0 effect on the vehicle's MPG."

Yes but science only says that after doing the wind tunnel tests. Before the wind tunnel tests science claimed tailgate down was best.
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RodOrRob
All-Star Author Mobile

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Message Posted: Jul 14, 2013 6:30:28 PM

http://dsc.discovery.com/tv-shows/mythbusters/mythbusters-database/driving-tailgate-fuel-consumption.htm

Tailgate UP is best!
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Mikeyl
Champion Author Cleveland

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Message Posted: Jul 14, 2013 9:21:46 AM

The science says that the air will "roll" in the bed and "push" the cab resulting in a net 0 effect on the vehicle's MPG.
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weddy11
Champion Author Phoenix

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Message Posted: Jul 4, 2013 10:39:10 AM

yes, was told of the same type of test 30 years ago.
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ugly46
Champion Author Indiana

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Message Posted: Jul 4, 2013 9:17:58 AM

Up is better
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HailstormCA
Champion Author San Diego

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Message Posted: Jul 3, 2013 7:44:49 PM

So?
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AKStafford
Rookie Author Alaska

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Message Posted: Jul 3, 2013 4:38:50 PM

I keep mine up.
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MTK143
Veteran Author Pittsburgh

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Message Posted: Jul 2, 2013 8:46:10 AM

cool
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jack4141
Champion Author Alabama

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Message Posted: Jul 2, 2013 8:06:05 AM

Ok
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priver
All-Star Author Alberta

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Message Posted: Jun 30, 2013 1:08:18 AM

up keeps it from getting chipped too..
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outlaw329
Champion Author Austin

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Message Posted: Jun 29, 2013 8:31:11 PM

Mine is up unless hauling something that needs to have the tailgate down.
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wamster
Champion Author Houston

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Message Posted: Jun 19, 2013 4:34:27 AM

Up, with a bed top. Even my owners manual says to drive like this unless you're hauling someting which is too tall or long.
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FrankLee1
All-Star Author Minnesota

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Message Posted: Jun 19, 2013 2:17:59 AM

dass, why would you say that? Do you know for a fact net gates are better? No, you don't, because they have been PROVEN to be the WORST- worse than gate up or down- by those who are equipped to test such things.
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DanFMA
Champion Author Massachusetts

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Message Posted: Jun 17, 2013 6:00:09 AM

Have a hard cover. Does not matter.
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Greenrancher
All-Star Author Indianapolis

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Message Posted: Jun 16, 2013 11:21:09 AM

Keep mine up. Keeps anything in my bed from ending up on the road.
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Skyjunky
All-Star Author Portland

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Message Posted: Jun 15, 2013 8:59:45 AM

This is True up is a design.
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eyegotgas2
Champion Author British Columbia

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Message Posted: Jun 15, 2013 7:49:29 AM

Interesting discussion but if the tail gate was down you couldn't put things in the box and if that's the case you might as well but a car that's better on gas.

Trucks are far more useful with the tailgate up.
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dvc2
Champion Author Oakland

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Message Posted: Jun 15, 2013 3:02:07 AM

up
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dassfg
Champion Author Fort Worth

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Message Posted: Jun 13, 2013 11:33:12 AM

keep it up or get a flow thru V-gate
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the1roadhog
Champion Author Atlanta

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Message Posted: Jun 6, 2013 8:25:49 AM

and...um, Cowboy Up (ing)? Hmmm
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metalhat73
Champion Author Wilmington

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Message Posted: Jun 5, 2013 10:20:26 AM

Interesting.
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craigqc
Sophomore Author New Jersey

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Message Posted: Jun 3, 2013 11:20:55 PM

up increases mpg. look it up on mythbusters
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sharpeyeinmn
Rookie Author Minnesota

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Message Posted: Jun 2, 2013 10:48:39 AM

Unless you something laying on the tailgate to hold it down, it's illegal to have it down, because I was stopped by a city kitty, and told so!

I had a 2001 Ford Ranger 4x4. Yes it seem to get better mileage with it off. It only it's seconds to take it off. I had a 3.0 liter engine. It shifted down more than my Dad's 4.0 did!
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