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What does your fuel economy look like this winter?

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IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

What does your fuel economy look like this winter?

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Old 12-28-17, 04:36 PM
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rvtlyzd
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Question What does your fuel economy look like this winter?

Unfortunately, these cold Canadian winters drink my gas like nothing and I struggle to get 310 miles out of a tank, ending up with about 260 miles on the trip computer when empty. Recently been getting 18mpg combined while in the summer, I averaged a solid 22mpg (my car is from the US)

Very curious to see how others compare right now. Not sure if mods will play a part in this, but I have a KN intake and straight pipe muffler delete.
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Old 12-28-17, 05:10 PM
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MikeFig82
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Summer I get about 22 MPG/ Winter I'm getting about 19-20 MPG. Texas weather is not really cold. Only mods I have is a drop in AEM filter, and Apexi throttle controller. Also the charcoal filter is removed from the top air box lid. So I'm letting in definitely more air in.
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Old 12-29-17, 09:41 AM
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Had been getting about 24-25 MPG this month, last summer got 25-27. That's on my '06 IS 350, with a 50 minute commute to work. This week I'm off from work, doing lots of short trips around town, and seeing mileage plummet to around 20.
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Old 12-29-17, 10:23 PM
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Terrible!
Which is why I take the bus and leave the 88 325is and 06 IS350 at home in the garage!

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Old 12-30-17, 05:08 AM
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Pretty bad... I usually average like 10-11L/100km (24 MPG?) now I get like 13L/100km (20 MPG?), car barely gets time to warm up in 30 min commuting traffic for me

Last edited by Aspect; 12-30-17 at 10:49 PM.
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Old 12-30-17, 07:07 PM
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I get 22-23 mpg all year round.
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Old 12-31-17, 05:36 AM
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I have an '09 IS250 and I just filled up. Travelled 608km on 51L of gas. I'm pretty happy but i usually get closer to 700km on a fill
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Old 12-31-17, 12:31 PM
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Just filled up

327 miles
15 premium gallons
​​​​​​​21.8 mpg

IS250C - 8,400 miles
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Old 12-31-17, 03:26 PM
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This car continues to amaze. Just hit 24.5 MPG average. The darn G37 never gets better than 18.
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Old 01-03-18, 12:50 PM
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Are you guys calculating the miles or going by the trip computer? My computer is telling me I'm around 26 mpg this winter.
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Old 01-03-18, 01:15 PM
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Originally Posted by Skier76 View Post
Are you guys calculating the miles or going by the trip computer? My computer is telling me I'm around 26 mpg this winter.
i used a fuel app
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Old 01-03-18, 01:28 PM
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ryanSC300lover
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Originally Posted by Skier76 View Post
Are you guys calculating the miles or going by the trip computer? My computer is telling me I'm around 26 mpg this winter.
i use my own calculator after every fill up
Car is 2 mpg optimistic
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Old 01-03-18, 01:50 PM
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Summer manual calculations.... 60% town/40% fwy

IS-350 MPG (17.0 gal max)
297.0 / 14.40 = 20.63 mpg
327.6 / 12.66 = 25.87
284.0 / 12.83 = 22.13
293.6 / 13.60 = 21.58
293.5 / 13.76 = 21.32
250.1 / 11.84 = 21.18
325.6 / 14.76 = 22.05
289.2 / 13.96 = 20.71
299.2 / 13.66 = 21.90
299.4 / 14.53 = 20.61

Winter... Im getting about 1.75mpg less fueling at 260/275 mi. Temps are in the 30F....
It takes about 3.5 mi of traffic to the freeway to get the temp gauge to its normal 6 O'clock position.
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Old 01-04-18, 05:32 PM
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rvtlyzd
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I'm honestly jealous after hearing all of this. Just put in $30 of 91 for the time being, got half a tank and 140 miles of range. Used to get 160-170

Also, I noticed there are some GTA locals in here. Where do you get your gas from? Personally, Husky did me so well this summer. Got more range and burned better compared to Costco and Esso and what have you.
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Old 01-04-18, 07:44 PM
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Originally Posted by rvtlyzd View Post
I'm honestly jealous after hearing all of this. Just put in $30 of 91 for the time being, got half a tank and 140 miles of range. Used to get 160-170

Also, I noticed there are some GTA locals in here. Where do you get your gas from? Personally, Husky did me so well this summer. Got more range and burned better compared to Costco and Esso and what have you.
i use costco gas. i don't see a difference in MPG between shell, exxon, valero, costco, ect :shrugs:
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