The Cost of Speed
Dec 25, 2017 12:05:54 #
I saw this on another site. The faster you drive, the more gas you use to go the same distance, increasing the relative price per gallon. Click on "Observe the Speed Limit" and enter the info your car.
https://www.fueleconomy.gov/feg/driveHabits.jsp
https://www.fueleconomy.gov/feg/driveHabits.jsp
Dec 25, 2017 12:17:45 #
Drove to Fla. down I-95 Friday. Average speed when traffic wasn’t standing still was just under 80. 33.4 MPG in a 2009 Prius Touring Edition WITH a large car-top carrier and a full (over-) load.
Normal mileage in that car is 42 without the car top carrier.
Normal mileage in that car is 42 without the car top carrier.
Dec 25, 2017 12:27:52 #
You are so right Jerry! I got a new HEMI and it loves 55; don't get me wrong, it will go a hundred in fourth... ...four more to go!
Dec 25, 2017 12:39:41 #
I generally get about 29 to 30 GPM in my Genesis G1 on I77 between Columbia SC and Charlotte NC. I drive 80 to 85 all the time. I make this trip 3 round trips a month, on the occasion that I get slow traffic the mileage goes down. More time in the Car more gas burned.
Dec 25, 2017 12:56:53 #
rrkazman wrote:
I generally get about 29 to 30 GPM in my Genesis G1 on I77 between Columbia SC and Charlotte NC. I drive 80 to 85 all the time. I make this trip 3 round trips a month, on the occasion that I get slow traffic the mileage goes down. More time in the Car more gas burned.
Uhh, GPM = gallons per mile. How big’s the tank?
Dec 25, 2017 18:07:36 #
About 1961 I took a road trip across the country. Went about 15,000 miles. Since I was unemployed at the time and didn't have a schedule I decided to try to see what sort of gas mileage I got from my Plymouth Valiant. So I travelled 1000 miles (approximately) at 30 mph (approximately), 1000 miles at 35 mph, 1000 miles at 40 mph, 1000 miles at 45 mph, etc., and kept records of gas consumption. I found the best gas mileage was in the 40-45 mph range. Below that speed the gas mileage started to decrease. This was done on public highways so keeping to a constant speed was not always possible to do safely so the numbers are pretty rough. However I believe it was statistically significant to note that gas mileage decreased at very slow speeds.
Engines are designed to run most efficiently at a particular speed, so this conclusion should not be surprising. I don't have the records any more but my (very old) memory tells me that the Valiant got something like 27 mpg peak back in those days. Gasoline probably cost something like 30 cents per gallon.
Engines are designed to run most efficiently at a particular speed, so this conclusion should not be surprising. I don't have the records any more but my (very old) memory tells me that the Valiant got something like 27 mpg peak back in those days. Gasoline probably cost something like 30 cents per gallon.
Dec 25, 2017 18:51:34 #
DirtFarmer wrote:
About 1961 I took a road trip across the country. ... (show quote)
My first car (in 1971) was a 1960 Valiant V-100 with a slant six and 3-on-the-floor. It never varied much from 19.5 MPG. My Dad has bought it new in April, 1960.
That was, by far, THE WORST vehicle I have ever driven. What a pile of $#!t. I have so many stories to tell about mechanical breakdowns in that car... ALL embarrassing incidents at the time, but hilarious, now.
Dec 25, 2017 23:15:07 #
jerryc41 wrote:
I saw this on another site. The faster you drive, the more gas you use to go the same distance, increasing the relative price per gallon. Click on "Observe the Speed Limit" and enter the info your car.
https://www.fueleconomy.gov/feg/driveHabits.jsp
https://www.fueleconomy.gov/feg/driveHabits.jsp
It increases the relative price per mile. The price per gallon stays the same.
Dec 26, 2017 06:23:16 #
burkphoto wrote:
My first car (in 1971) was a 1960 Valiant V-100 with a slant six and 3-on-the-floor. It never varied much from 19.5 MPG. My Dad has bought it new in April, 1960.
That was, by far, THE WORST vehicle I have ever driven. What a pile of $#!t. I have so many stories to tell about mechanical breakdowns in that car... ALL embarrassing incidents at the time, but hilarious, now.
That was, by far, THE WORST vehicle I have ever driven. What a pile of $#!t. I have so many stories to tell about mechanical breakdowns in that car... ALL embarrassing incidents at the time, but hilarious, now.
Could your driving and the age of the car have had anything to do with breakdowns?
Dec 26, 2017 06:50:51 #
By the chart the big drop off begins about 50MPH. Being a fellow New Yorker who travels the Thruway and Northway, Jerry. When was the last time you saw anyone doing 50 on those highways?
Dec 26, 2017 07:14:42 #
TJBNovember wrote:
By the chart the big drop off begins about 50MPH. Being a fellow New Yorker who travels the Thruway and Northway, Jerry. When was the last time you saw anyone doing 50 on those highways?
With a speed limit of 65, the Thruway traffic moves at 70 - 75, with lots of vehicles going faster that that. One thing I don't appreciate is an 18-wheeler pulling out to pass another 18-wheeler while they are going up a hill. That seems to be a required move by truckers - block both lanes and then slow down.
Dec 26, 2017 07:34:55 #
Chrysler has always made garbage vehicles. Still does.
burkphoto wrote:
My first car (in 1971) was a 1960 Valiant V-100 with a slant six and 3-on-the-floor. It never varied much from 19.5 MPG. My Dad has bought it new in April, 1960.
That was, by far, THE WORST vehicle I have ever driven. What a pile of $#!t. I have so many stories to tell about mechanical breakdowns in that car... ALL embarrassing incidents at the time, but hilarious, now.
That was, by far, THE WORST vehicle I have ever driven. What a pile of $#!t. I have so many stories to tell about mechanical breakdowns in that car... ALL embarrassing incidents at the time, but hilarious, now.
Dec 26, 2017 07:41:01 #
AirWalter
Loc: Tipp City, Ohio
jerryc41 wrote:
With a speed limit of 65, the Thruway traffic moves at 70 - 75, with lots of vehicles going faster that that. One thing I don't appreciate is an 18-wheeler pulling out to pass another 18-wheeler while they are going up a hill. That seems to be a required move by truckers - block both lanes and then slow down.
You have to remember Jerry that the 18 wheeler driver could be going up hill with a total weight of 40 tons. When They pull out in traffic like that it is because They are trying to maintain some momentum. It takes a while to get a big truck like that moving again, and most of those drivers are on a schedule. It really doesn't delay a 4 wheeler much time.
Dec 26, 2017 07:54:37 #
My Avalon Hybrid gets it's best gas milage between 75 and 80 MPH, avg economy at that speed is 36.9MPG. It also does well in stop and go traffic.
Dec 26, 2017 07:55:17 #
burkphoto wrote:
My first car (in 1971) was a 1960 Valiant V-100 with a slant six and 3-on-the-floor. It never varied much from 19.5 MPG. My Dad has bought it new in April, 1960.
That was, by far, THE WORST vehicle I have ever driven. What a pile of $#!t. I have so many stories to tell about mechanical breakdowns in that car... ALL embarrassing incidents at the time, but hilarious, now.
That was, by far, THE WORST vehicle I have ever driven. What a pile of $#!t. I have so many stories to tell about mechanical breakdowns in that car... ALL embarrassing incidents at the time, but hilarious, now.
YMMV
For some reason, I had a string of Valiants and they all did pretty well. The knobs and handles all fell off but the engine ran without any problems. Got over 100K miles on all of them (which was pretty good back then). I didn't have any significant problems with Chrysler products until around 2008 when my 1998 Dodgem truck started having engine trouble. My 1988 Dodge truck is still doing fairly well in the engine department at around 200K miles, but the body has some problems, particularly after it rolled backwards past a tree with the drivers door open.
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