MUST READ!!! MPH to RPM to Time ratios,gas savings! - Toyota Yaris Forums

eco · 09-07-2007, 02:58 AM

I have measured many tank fulls of gas,at set speeds aswell,my trips are 95% highway,and I can still get 32-34mpg at 90mph,and I have been able to hit 47mpg at 55mph,this is very hard to achieve.So for a car that is only supposed to get 39 highway,and I can get 32-34 semi-speeding,then its still more efficent time wise to go this speed,because the mpg and the mph do not change at the same ratio.Say I was going 50mph and was able to get a steady 42mpg,so if I was going 100mph and only got 21mpg,it would be the same diffrence compared to time,but I bet I would still get about 30mpg,only losing about 25% in mpg,but going twice as fast.
And if wind resistance affected a car so much after 55mph,you might think you would only get 5mpg at 100mph,thats just plain BS.Remember there was a time when the experts and guinesses thought you would be ripped apart if you went over 50mph,what a crock of shit,so dont forget things that are thought to be true,arnt always true.

SDsurfrider · 09-07-2007, 02:36 PM

Quote:

Originally Posted by eco

my trips are 95% highway,and I can still get 32-34mpg at 90mph

Quote:

Originally Posted by eco

I can get 32-34 semi-speeding,then its still more efficent time wise to go this speed

what do you consider speeding if that is only semi speeding? If you are basing this logic on a cost efficiency basis. Wouldn't the impending speeding tickets also come into play?

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09-07-2007, 02:58 AM	#1
eco Drives: 2007 Black Yaris sedan Join Date: Sep 2006 Location: Atlanta Posts: 884	I have measured many tank fulls of gas,at set speeds aswell,my trips are 95% highway,and I can still get 32-34mpg at 90mph,and I have been able to hit 47mpg at 55mph,this is very hard to achieve.So for a car that is only supposed to get 39 highway,and I can get 32-34 semi-speeding,then its still more efficent time wise to go this speed,because the mpg and the mph do not change at the same ratio.Say I was going 50mph and was able to get a steady 42mpg,so if I was going 100mph and only got 21mpg,it would be the same diffrence compared to time,but I bet I would still get about 30mpg,only losing about 25% in mpg,but going twice as fast. And if wind resistance affected a car so much after 55mph,you might think you would only get 5mpg at 100mph,thats just plain BS.Remember there was a time when the experts and guinesses thought you would be ripped apart if you went over 50mph,what a crock of shit,so dont forget things that are thought to be true,arnt always true.