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Old 01-07-2009, 09:28 PM   #1
JBIZZ
 
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The engine runs at a higher RPM (revolutions per minute) at fast speeds. I get like 31MPG Highway/35MPG city in mine. If you slow down to 60MPH on the highway you will see a drastic fuel consumption improvement. When Traveling @ 80MPH, average RPMs are a little under 4K. I believe the average RPMs City driving are probably around 3K, maybe a little less (driving hard). Many bigger motor cars are actually more fuel efficient at higher highway speeds than the Yaris, because they are running at a lower RPM. I believe its safer driving fast with traffic, than driving slower than traffic. Here in Fort Lauderdale average Highway speed is @ 80MPH. There are a few window lickers who go 60MPH or even 40MPH on the highways.
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Old 01-08-2009, 12:43 AM   #2
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Quote:
Originally Posted by JBIZZ View Post
The engine runs at a higher RPM (revolutions per minute) at fast speeds. I get like 31MPG Highway/35MPG city in mine. If you slow down to 60MPH on the highway you will see a drastic fuel consumption improvement. When Traveling @ 80MPH, average RPMs are a little under 4K. I believe the average RPMs City driving are probably around 3K, maybe a little less (driving hard). Many bigger motor cars are actually more fuel efficient at higher highway speeds than the Yaris, because they are running at a lower RPM. I believe its safer driving fast with traffic, than driving slower than traffic. Here in Fort Lauderdale average Highway speed is @ 80MPH. There are a few window lickers who go 60MPH or even 40MPH on the highways.
That does make sense. Thank you for explaining that! I usually drive about 75 on the highway and no more than 50 in town, so I guess that's why. Still unusual to see, though!
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Old 01-08-2009, 01:53 AM   #3
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IMO I believe the highway MPG would improve if either the final 2 tranny gears were stretched-out just a little, or if another gear was added to the existing setup.

I think we could all really use it for those longer trips
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