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

eco · 09-05-2007, 07:13 PM

Mph /Rpm /Rpm÷mph /Time to drive 60 miles

45 /1940 /43.111 /1h20m
50 /2150 /43 /1h12m
55 /2360 /42.90 /1h6m
60 /2575 /42.916 /1hour
65 /2770 /42.615 /55minutes
70 /2990 /42.714 /51m
75 /3200 /42.666 /48m
80 /3380 /42.25 /45m
85 /3660 /43.058 /42m
90 /3840 /42.666 /39m

I understand these ratios only stand true for my 1NZ-FE 1.5,but yours are very similar,if not exactly the same.So it looks like your efficiency actually improves slightly at higher MPH's until you hit 85mph,this is shown by dividing the rpm by the mph.
Now on to the time issue,so the car is just as efficient at higher mph's,so you should only be worried about how fast you need to be some where.Please feel free test this yourself,use cruise control at set speeds on flat road,take the average rpm (it was easy for me,I have scangauge,set to update fast),now write that down,use 5mph levels.

09-05-2007, 07:13 PM	#1
eco Drives: 2007 Black Yaris sedan Join Date: Sep 2006 Location: Atlanta Posts: 884	MUST READ!!! MPH to RPM to Time ratios,gas savings! Mph /Rpm /Rpm÷mph /Time to drive 60 miles 45 /1940 /43.111 /1h20m 50 /2150 /43 /1h12m 55 /2360 /42.90 /1h6m 60 /2575 /42.916 /1hour 65 /2770 /42.615 /55minutes 70 /2990 /42.714 /51m 75 /3200 /42.666 /48m 80 /3380 /42.25 /45m 85 /3660 /43.058 /42m 90 /3840 /42.666 /39m I understand these ratios only stand true for my 1NZ-FE 1.5,but yours are very similar,if not exactly the same.So it looks like your efficiency actually improves slightly at higher MPH's until you hit 85mph,this is shown by dividing the rpm by the mph. Now on to the time issue,so the car is just as efficient at higher mph's,so you should only be worried about how fast you need to be some where.Please feel free test this yourself,use cruise control at set speeds on flat road,take the average rpm (it was easy for me,I have scangauge,set to update fast),now write that down,use 5mph levels. Last edited by eco; 09-05-2007 at 11:29 PM.