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What is your winter MPG?

Old 01-10-2019, 04:48 PM
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What is your winter MPG?

Having only had this base 12 for 2 months I was really excited the first month getting about 26-27mpg with a 80/20 hwy/city. Then it dropped to 25-26 but the temps were falling so it was running richer. Filled up the other day and now hovering at around 22.5-23.1 mpg. Outside air is 22˚. Do you all get similar mileage? I have been using Costco gas for the past 7-8 years and running the premium.

Thanks
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Old 01-10-2019, 05:25 PM
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Originally Posted by mdb007 View Post
Having only had this base 12 for 2 months I was really excited the first month getting about 26-27mpg with a 80/20 hwy/city. Then it dropped to 25-26 but the temps were falling so it was running richer. Filled up the other day and now hovering at around 22.5-23.1 mpg. Outside air is 22˚. Do you all get similar mileage? I have been using Costco gas for the past 7-8 years and running the premium.

Thanks
Interesting, my 3G 2006 6MT typically averages 28/29 mpg summer with an 80/20 mox, and more like 26/27 in the winter, even when the OAT is down in the 20.
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Old 01-10-2019, 05:48 PM
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I seemed to see a more pronounced difference in fuel economy in the winter with my 3G but for some reason I haven't noticed any difference in the 4G. I haven't kept track though. Just observations. I've always averaged about 25-26mpg 50/50 city/highway and closer to 29/30 when 90% highway (like roadtrips). That's been regardless of temperature.
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Old 01-11-2019, 02:52 PM
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'12 Base TL, 26mpg for most of the winter on Costco Premium E10.

I was getting 28-29 most of the summer, same gas and commute.
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Old 01-11-2019, 03:00 PM
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Thanks , yeah seems really weird to drop down 2-4mpg even with colder weather and driving the same route every day. I'm thinking about getting a tank of non ethanol gas to see if that makes a difference. I was really excited with that initial mpg because the maxima sucked with the cvt! 22mpg and with a bad o2 sensor dropped to 19.
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Old 01-11-2019, 03:44 PM
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I tried EtOH free a few times but never noticed a difference in either performance or mileage.
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