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Old 08-27-2020, 07:07 AM   #1
meemadd
 
Drives: 2009 yaris
Join Date: Jun 2016
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auto trans rpm lowering for mpg

what options do auto trans owners have to lower final drive rpm to increase mpg in second gen yaris?
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Old 08-27-2020, 07:53 AM   #2
Leegamer
 
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Drives: 2008 Yaris HB 5-Speed
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Are there any except for driving slower or having different gearing?
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Old 08-27-2020, 08:09 AM   #3
06YarisRS
 
Drives: 06 2ZR Turbo Yaris RS
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Like Leegamer says, "drive slower". You could drop the rpm marginally by installing larger tires, but then you'd be using more power to turn them, negating any fuel economy gains. Do you not already get excellent fuel economy? I have the auto in one of my Yari and fuel economy is exceptional. I haven't actually compared the rpm at say 110 kmh between my auto and manual. I should do that.
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