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Old 12-30-2005, 03:05 AM   #1
Downward Spiral
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Gas Mileage Tips

http://www.fueleconomy.gov/feg/driveHabits.shtml

At this website, one of the tips it gives for saving on gas is improving mileage through "observing the speed limit". Now, I don't know how everyone here is about following the law and going 30 MPH on roads that clearly can afford to be bumped up a bit, but is this "following the speed limit" stuff to improve mileage true in any sense, or is it just the government trying to sell us on their laws?

Here's the excerpt from the website:

Quote:
While each vehicle reaches its optimal fuel economy at a different speed (or range of speeds), gas mileage usually decreases rapidly at speeds above 60 mph.

As a rule of thumb, you can assume that each 5 mph you drive over 60 mph is like paying an additional $0.21 per gallon for gas.

The only reason I could see to obey speed limits (asides from avoiding getting caught) would be so you don't bother switching up a few gears when you're going to hit a stop sign or light in about 100-200 feet.
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Old 12-30-2005, 03:08 AM   #2
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I heard 55mph is the most efficient, but I don't think the 30 mph speed limits are really for fuel economy as much as safety...
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Old 01-01-2006, 06:23 AM   #3
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thanks for the gas saving info!

Also, just today I bought a 99 Ford Escort SE, does anyone know how many mpg it gets city?
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Old 01-01-2006, 07:10 AM   #4
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Quote:
Originally Posted by aeprominant
thanks for the gas saving info!

Also, just today I bought a 99 Ford Escort SE, does anyone know how many mpg it gets city?
http://www.cars.com would
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Old 01-01-2006, 07:14 AM   #5
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for the sole purpose of undermining newyorker's oh so troublesome efforts, i'm gonna go ahead and say 25mpg if it's an automatic, and 28mpg if it's a manual.

but that's just claimed, under fairly perfect conditions. i doubt you'll actually see that mileage in the city. combined, yes, purely in the city, no.
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Old 01-01-2006, 07:26 AM   #6
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Quote:
Originally Posted by pik_d
for the sole purpose of undermining newyorker's oh so troublesome efforts, i'm gonna go ahead and say 25mpg if it's an automatic, and 28mpg if it's a manual.

but that's just claimed, under fairly perfect conditions. i doubt you'll actually see that mileage in the city. combined, yes, purely in the city, no.
28 city and 39 highway. What is undermining im a bit drunk.
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Old 01-01-2006, 07:46 AM   #7
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Quote:
Originally Posted by chris_knows
I heard 55mph is the most efficient, but I don't think the 30 mph speed limits are really for fuel economy as much as safety...

Um....I think it might be different for every car.... but hell what do I know?
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Old 01-02-2006, 01:17 AM   #8
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Quote:
Originally Posted by Mathew
Um....I think it might be different for every car.... but hell what do I know?

It would be different depending on cars, but that's what Nixon (I believe) set as the most efficient speed, and in general, cars get the best mileage in that vicinity...
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Old 06-25-2006, 11:55 PM   #9
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Quote:
Originally Posted by aeprominant
thanks for the gas saving info!

Also, just today I bought a 99 Ford Escort SE, does anyone know how many mpg it gets city?

This site has it all:

American Cars Fuel Mileage Comparison
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Old 06-26-2006, 03:44 AM   #10
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Quote:
Originally Posted by Kakao

Good Job on reviving an old thread @$$. Oh and it doesn't have everything, please estimate, USING THAT, what my 1988 Mustang GT 5.0 gets. Yes 5.0 not 4.6, or 4.0, as those are the only options it gives you for a Mustang.
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Old 06-30-2006, 10:16 AM   #11
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well yea it save you some gas but you know some speed limits are set so FREAKIN LOW IT BS
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