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11-05-2017, 01:35 PM | #1 |
Drives: 2015 yaris le Join Date: Feb 2015
Location: hamilton, on
Posts: 149
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Yaris MPG Drop
Anyone notice this. Yaris is about 9 years old, I replaced the original plugs on them about three years ago with NGK BKR5EIX11 Iridium IX with ones I got on sale from canadian tire. Since then, I have put around 70k on them. Pulled them out and they dont really look worn. Cleaned them off and reused them. Air filter is clean, and throttle body I cleaned probably 20-30k ago.
I also do the occasional fuel injector cleaner which I doubt has much effect anyways. |
11-05-2017, 02:26 PM | #2 |
Drives: 2010 yaris 3 door hatch Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 521
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Dirty maf or engine running cooler (bad t stat).
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11-05-2017, 04:13 PM | #3 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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Colder weather drops tire pressure (gas law) and stiffens tire rubber. Also thickens lubricants and delays warm-up.
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11-05-2017, 04:30 PM | #4 |
Drives: '14 GT86, '08 Vitz Join Date: Dec 2006
Location: Central Valley, CA
Posts: 9,873
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Your local gas stations may have also switched to a cold temp/season/winter blend, which always causes a drop in mpg. Check you tire pressure as well.
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11-06-2017, 08:55 AM | #5 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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Yeah, mine has dropped too. My bet is on winter gas already.
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