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08-27-2020, 08:07 AM
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#1 |
 Drives: 2009 yaris Join Date: Jun 2016
Location: delaware
Posts: 6
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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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08-27-2020, 08:53 AM
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#2 |
 
Drives: No longer own a yaris :( Join Date: Mar 2012
Location: Ashland, VA
Posts: 680
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Are there any except for driving slower or having different gearing?
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I'm a hermit named Lee |
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08-27-2020, 09:09 AM
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#3 |
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Drives: 06 2ZR Turbo Yaris RS Join Date: Aug 2017
Location: Fredericton, New Brunswick, Canada
Posts: 2,384
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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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 2006 Yaris 5 Door RS 2ZR-FE (2011 Corolla 1.8L) Swapped, Automatic, T-28 Turbocharged (8 psi), HSD MonoPro Coilovers, DIY W/M Injection, custom 3" cold air intake, custom 2.5" exhaust, TRD rear sway bar, Penguin Garage 13mm spacers (rear), custom Civic front lip, full repaint, Android 6.0 7" touchscreen, Rockford Fosgate speakers, tweeters, NVX underseat subwoofer https://www.instagram.com/2zr_turbo_yarisrs/ |
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06-07-2023, 03:14 AM
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#4 |
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Drives: 2007 Toyota Yaris Sedan Join Date: Feb 2019
Location: Harrisburg, PA
Posts: 149
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larger tires. Trailer tires are taller, 195/65r15s are taller.
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01-09-2024, 09:07 AM
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#5 |
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I've made a post!
Drives: Man Join Date: Jan 2024
Location: Crapmanager
Posts: 1
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Have you considered alternative approaches, like adjusting your driving habits, or are you specifically looking for modifications to the car itself to improve fuel efficiency?
For those who have made modifications, how significant were the changes in fuel efficiency, and would you recommend them to other auto trans owners seeking better MPG? |
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02-08-2024, 03:03 AM
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#6 |
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I've made a post!
Drives: Man Join Date: Feb 2024
Location: Oxizuseq
Posts: 1
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Have you explored other options, such as adjusting your driving habits, or are you primarily interested in car modifications to enhance fuel efficiency? If modifications were made by others, how impactful were the changes in fuel efficiency, and would you suggest them to fellow auto transmission owners aiming for better MPG?
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