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2014 2.5i Touring CVT
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Discussion Starter · #1 ·
I've only used my seat warmers about 4 times. However, every single time, it seems that the trip mpg becomes a lot less accurate. The tank mpg still updates properly though.

Anyone else notice this on their '14 2.5i?

Btw, for those keeping track, I get my replacement on Tuesday. I've decided to upgrade to a touring with eyesight. I can't wait! :)


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2014 Forester Limited CVT
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252 Posts
you know that's strange and quite an observation... I just noticed a few days ago that my trip MPG seemed to be reading much lower than normal. Down in the 18MPG range as opposed to the normal 26MPG range. When I would complete the trip the comparison would say this trip was the same as the norm on the bar graph. I was wondering why this was happening. Had not really put allot of thought into it, but after reading your post above I realized I have been using my heated seats allot lately since it has been in the teens and twenties here as of late... Maybe you are on to something.

Nick
 

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2014 2.5i Touring CVT
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Discussion Starter · #3 ·
Yup. My normal range going to work is between 29-32mpg. With the heat warmers on, I've seen it get stuck at 14mpg for about 10 miles or so. After turning it off, it climbed up to 17mpg. All this time, the tank's mpg ave. is updating like nothing happened.

That's just something weird I noticed and was wondering if anyone else has experienced.


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2014 Forester 2.5i Lim CVT
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I would be shocked if it was the seats causing the issue. While it does use some power, that should not reduce mpg noticably imo. I would guess that you are using the seat warmers while it is colder out (obviously) which also means, you may be using remote, or if not, the car will idle much higher while it warms ups, dropping the mpg substantially. Add to that the winter gas mixture, and you potentially end up with a substantial drop.
 

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Discussion Starter · #5 ·
I would be shocked if it was the seats causing the issue. While it does use some power, that should not reduce mpg noticably imo. I would guess that you are using the seat warmers while it is colder out (obviously) which also means, you may be using remote, or if not, the car will idle much higher while it warms ups, dropping the mpg substantially. Add to that the winter gas mixture, and you potentially end up with a substantial drop.
Agreed. I don't think it's actually affecting gas mileage. I think it's affecting the display/update to the gas mileage through the MFD though.


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Wow, I just did a long drive (almost 300 miles) on Sunday, with the heater on, and I had air'd up the tires before leaving, and my MPG seemed pretty low. I wasn't going the speed limit and it was pretty cold out, but I was surprised at the reading. I'll have to pay closer attention to this now that you posted this.

Paul G.
 

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Agreed. I don't think it's actually affecting gas mileage. I think it's affecting the display/update to the gas mileage through the MFD though.


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I'm also not sure it's affecting the actual MPG but the constantly updating trip display sure says it is. Also note that my overall MPG on the display has not changed just the trip MPG.

Something that is happening now that it is cold out seems to be affecting the MPG that is displayed. Not sure what. I am starting to keep a closer eye on this though. I am not sure my MPG is not dropping though to be honest. I filled up on Friday and as of this evening on my ride home I was at one bar less than half a tank. I normally get a full 7 days from a full tank. It looks like I may only get 5 out of this tank for some reason. I didn't drive much over the weekend either. I am due for my first oil change though. got less than 100 miles until it's due.

Nick
 

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I think it's just the colder temps. I filled mine today (14,300 miles on a 2.5i) and it said 380 miles until empty. I think it was usually over 400 miles. It's been in the mid 20s here for 4-5 days.


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