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How much is fast driving costing you?

GasBuddy Blog -- How much does your gas mileage decline -- and how much does your gas cost rise? -- if you drive at 60 mph rather than 50? How about 70 or 80 mph?

Mark Phelan of the Detroit Free Press asks that question. He says that until last week, nobody had quantified the effect real-world speeds have on fuel economy, despite the fact that most people hit those speeds on the highway every day. New research by the DOE --which works with the EPA to generate window-sticker mileage figures -- should help create models to help drivers figure out the effect higher speeds have on their specific vehicle.

And he's got some answers too. He says you should expect a 41% decrease in fuel economy if you're a leadfoot driver who like drivign at...


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Submitted Feb 04, 2013 By: PD
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Calbo1
Champion Author Las Vegas

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Message Posted: Jan 26, 2014 10:00:01 AM

pure physics as it takes more energy to overcome the added wind resistance, so if you like those boxy shaped vehicles it increases wind resistance.
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mbfd302
Champion Author Miami

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Message Posted: Jan 23, 2014 10:40:31 PM

time is money, i'll spend the gas to save the time
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mbfd302
Champion Author Miami

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Message Posted: Jan 23, 2014 10:38:45 PM

time is money, i'll spend the gas to save the time
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gasmask78
Champion Author Virginia

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Message Posted: Jan 13, 2014 9:17:34 PM

Yep
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gasmask78
Champion Author Virginia

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Message Posted: Jan 13, 2014 9:17:14 PM

A lot
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gasmask78
Champion Author Virginia

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Message Posted: Jan 3, 2014 11:04:42 AM

Gr
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pilotmass
Champion Author Boston

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Message Posted: Jan 3, 2014 8:22:17 AM

75= 18
65= 21

On short journey's happy at 65

When I'm doing my 1000 mile trips 75 saves me an hour plus
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2parrots
Champion Author Massachusetts

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Message Posted: Jan 3, 2014 8:13:36 AM

See my Dec. post .
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dfp609
Champion Author Cincinnati

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Message Posted: Jan 3, 2014 5:22:42 AM

OUCH! A 41% decrease in fuel economy is quite substantial. I think that alone could slow me down.
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mabrams184
Champion Author Lexington

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Message Posted: Jan 1, 2014 7:51:16 PM

Not to mention the cost of the ticket you get when the cops catch up with you.
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xbAG
Champion Author California

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Message Posted: Dec 27, 2013 7:16:40 PM

I drive mostly local,
so I go with the flow of traffic.
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gasmask78
Champion Author Virginia

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Message Posted: Dec 27, 2013 6:22:42 AM

Hmmmmmmmmmmmmmmmmmmmm
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rich13251
Veteran Author Toledo

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Message Posted: Dec 15, 2013 8:38:50 PM

nothing
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2parrots
Champion Author Massachusetts

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Message Posted: Dec 11, 2013 4:44:29 AM

I do 55 - 65 most of the time on the highway & get 30 - 32 mpg consistently in my Dodge Caliber ,with 135k & counting .
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gasmask78
Champion Author Virginia

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Message Posted: Dec 10, 2013 10:16:27 PM

Answer: A Lot.
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Calbo1
Champion Author Las Vegas

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Message Posted: Dec 10, 2013 10:24:36 AM

1~3 gallons driving between 70 and 75
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Vette1967
Champion Author Albany

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Message Posted: Dec 9, 2013 10:19:08 PM

I enjoy trying to get the most MPG.
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wrangler63
All-Star Author Twin Cities

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Message Posted: Dec 9, 2013 6:19:03 AM

How about a fuel economy readout so the vehicle operator knows?
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pkhdonovan
Champion Author Maine

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Message Posted: Dec 9, 2013 2:47:50 AM

probably a few miles less per gallon
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loboso
Champion Author Virginia Beach

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Message Posted: Dec 7, 2013 4:42:55 AM

does it really matter unless fuel has decreased drastically which i haven't notice
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tklsr
Champion Author Akron

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Message Posted: Dec 6, 2013 6:55:50 AM

I try to keep pace with the other traffic on the highway. There's nothing worse than someone impeding the flow of traffic on the interstate.
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gasmask78
Champion Author Virginia

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Message Posted: Dec 5, 2013 10:13:46 PM

It doesn't bother me when ppl pass me anyways.
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gasmask78
Champion Author Virginia

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Message Posted: Dec 5, 2013 10:13:14 PM

This is why I keep it between 55-60 the majority of the time.
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Ken2OD
Champion Author Grand Rapids

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Message Posted: Nov 14, 2013 1:30:33 PM

I set my cruise control at the speed limit and let it go at that. My MPG is what it is and it probably will not get any better. I can get 20 mpg in the city and 29 mpg on the highway.
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steve_95037
Rookie Author San Jose

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Message Posted: Nov 13, 2013 11:05:47 AM

"By using those percentages and multiplying them" you should be able to drive fast enough to get zero mpg.
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pilotmass
Champion Author Boston

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Message Posted: Nov 12, 2013 7:55:55 AM

Wont save me enough going slower
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Timons
Champion Author Houston

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Message Posted: Nov 11, 2013 7:11:54 AM

Instead of the speedometer, once I have reached highway speeds (70 mph), I use the tachometer and cruise control to maximize fuel consumption.
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markcayer
All-Star Author Ottawa

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Message Posted: Nov 4, 2013 1:45:01 PM

Driving smoothly with few sudden accelerations and stops seems to work best for me. No jackrabbit starts and always leaving when I know that the traffic will be a bit lighter to avoid lots of stops and starts.
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GasScamp
Veteran Author Columbus

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Message Posted: Nov 4, 2013 11:16:31 AM

I use two main strategies to save gas: leave earlier so I can drive the speed limit on the highway (65mph in most places here) and use cruise control.
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agrico
Champion Author New Orleans

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Message Posted: Nov 3, 2013 8:35:49 PM

guess its time vs costs - whatever is best value - may slow down when I retire
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loboso
Champion Author Virginia Beach

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Message Posted: Nov 3, 2013 2:22:14 PM

About the same
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JMW1942
Champion Author Michigan

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Message Posted: Oct 29, 2013 12:18:27 PM

Then why is the capital of the state of Mi considering raising the speed limit on the main highway through
the city to 75 mph?
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46chief
Champion Author Indiana

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Message Posted: Oct 27, 2013 3:31:45 PM

I drive 55 if traffic is light. 70 is my absolute fast speed and it is very rare I do that.
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TranzorZ1985
Rookie Author Illinois

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Message Posted: Oct 26, 2013 8:14:21 PM

I can't drive 55....
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geneo56
Champion Author Arkansas

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Message Posted: Oct 21, 2013 3:34:07 PM

I am guilty of higher speeds.
I need to slow it down.
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agrico
Champion Author New Orleans

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Message Posted: Oct 20, 2013 9:01:41 PM

wow
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hjl17
Champion Author Toronto

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Message Posted: Oct 19, 2013 6:07:12 AM

Not sure
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angieoke
All-Star Author Phoenix

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Message Posted: Sep 24, 2013 9:56:39 AM

Just slow down. why is everyone in such a hurry?
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JCClark2012
Champion Author New Hampshire

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Message Posted: Sep 24, 2013 7:31:04 AM

Your going to loose either way. You have to find the sweet spot and drive there.
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Gas4Gore
Champion Author Detroit

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Message Posted: Sep 20, 2013 6:59:56 PM

About the same as slow driving.
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monkeythief
Champion Author Victoria

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Message Posted: Sep 7, 2013 11:40:45 AM

SLOW DOWN PEOPLE! Everyone seems to be in a hurry to get nowhere FAST!!
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Clayton2000
Champion Author South Carolina

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Message Posted: Sep 4, 2013 4:30:36 AM

Best mileage at 60 mph
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dongo50
Champion Author West Virginia

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Message Posted: Sep 3, 2013 7:36:36 AM

not much
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dongo50
Champion Author West Virginia

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Message Posted: Sep 3, 2013 7:05:35 AM

not much
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KathrynOKC
Sophomore Author Oklahoma City

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Message Posted: Sep 3, 2013 5:32:15 AM

I believe that. I try to coast as much as possible and take my time and just stay out of the way.
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Robert44
Champion Author Columbus

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Message Posted: Sep 1, 2013 6:56:16 AM

Excellent article!!!
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jeskibuff
Champion Author Tampa

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Message Posted: Aug 29, 2013 9:02:11 PM

Gas mileage would increase if a lot of roads had faster speeds and no speed traps. Traffic would flow better, there'd be less congestion and gas consumption would decrease by eliminating wasteful stop-and-go driving.
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jcVA
Champion Author Virginia Beach

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Message Posted: Aug 27, 2013 10:28:55 AM

ppl rush to get to their crappy jobs ,,, only wanting to leave when they arrive..hahahahahha
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cools1611
Champion Author Providence

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Message Posted: Aug 25, 2013 1:32:33 PM

That makes sense, but recently an oldman driving at 40 mph on a highway 55 speed limit got his license suspended. So driving slow can also put you in driving violations at times.

We have to balance speed and gas cost also avoid driving violations. 55mph would be ideal on a highway.
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Vette1967
Champion Author Albany

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Message Posted: Aug 24, 2013 11:48:01 PM

True but, driving 50-55 mph can get your killed on a NYS highway.
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