Real world gas mileage on the 2017s
 

I routinely beat the EPA estimates for our car (both city/hwy) with my 2013 86.

I'm curious if the change in final drive really hurts the economy as much as advertised. anyone have any real world data or experience yet?

17 city and 20 highway roughly for me on average on stock tune...

I am also joking

In the summer I get 30 city 38 highway. Right now it's about 25 city 33 highway because cold and winter gas.

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in the fake world i get 9999 mpg

I get around 28 combined with an automatic. Quite a bit of manual mode and sport mode with a good mix of city and highway.

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20-22 avg with 80% city / 20% fwy on UEL stage 2 tune.

17 MPG on AT with manual mode - mind you I live in below freezing temperature and most of my driving distances is done one gear lower than normal just to warm up the oil.

I believe the OP was referring to the new 4.3 FD ratio in the manual trans MY17 cars.

Only a couple tanks in...
About 50/50 city/highway. I don't typically drive in a fuel efficient manner.

http://uploads.tapatalk-cdn.com/2017...2445de38c3.jpg

5% FD reduction is typically 2-3% less cruising efficiency, if that's what you wanted to know. The stock tune runs fairly rich on heavy throttle so you can easily burn 2% more gas by stepping on the pedal a little harder. On a flat freeway with cruise control on and no wind you'll lose 1mpg or so, because physics, but it would be quite hard to notice.

This is all that needs to be said^^^.
The difference in gearing is so minor and the variation in MPG due to different driving conditions so vast that any comparison is useless.

Im posting simply to say something else since you said that was all that needed to be said. And since that really is all that needed to be said this thread doesn't have much of a point anymore

Monitor this as more people receive 2017s.

http://www.fuelly.com/car/subaru/brz/2017

2017 brz owner since oct. Averaging 29mpg.

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38 MPG? In a 2017?

Might be lots of downhill and coasting. MPG meter jumps up to 127mpg in certain scenarios.

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Yeah but eventually you need to go back up that or a similar hill so... not happening.I think I hit 34 once and that was being miserly all day. Coasting in neutral is actually worse for mpg than freewheeling in gear. When you leave it in gear the fuel actually shuts off, when you're in neutral it has to burn to keep running.

Very true. Maybe a typo.

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:slap: ...... @Tcoat said that's all that needs to be said ....... and then you go and said some more ........ mind your elders!

:D


humfrz

28mpg hwy

19 city


After getting pump it has increased though. Will update in 4 more tanks. Need to avg least 20 tanks.

When did you get the 17 there Pack?

25-22mpg (75% hwy/25% city) with oft stage 2 uel tune and using heel-toe for downshift

You got a 17 as well?

Does nobody read titles anymore?
Do we really need another 1,000 page "I get 200 (0r 2) mpg" thread?
Do nobody get that the minor variations in driving means a massive range of possible MPG?
Should I really keep asking these rhetorical questions?

Yup, ask on the rethorical thread

That measure is meaningless when talking about "real world mileage". I get infinite mpg with the engine off going downhill, but the measure that counts is when I fill the tank, around 25 mpg.

It jumps to that when you are off the throttle above idle RPMs... You're essentially not using any fuel.

Yeah I understand that. It adds to the overall average though.

Mixed driving I get 31 mpg and on the highway I get 36 mpg

I live in an area that's mostly flat. The hills are low and long. They take little effort to go up and end in a lot of coasting. I've also ceramic coated my engine to reduce friction and have a fluidampr to reduce losses through crankshaft vibration. Don't currently have proof of my mpg at those number right now as it is cold as fuck.

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What in or on the engine did you ceramic coat ......??


humfrz

On a 2017?

Yes a 2017. https://www.cermastore.com/engine-tr...sel-autos.html

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Well now, Somerandom, since you have already poured that stuff in your oil, I won't poo-poo it.

However, even IF it does reduce friction in a new engine, I just don't believe it would be statistically significant.

As far as your exceptionally good gas mileage, you may wish to try to validate that come spring time, by measuring your mileage the old fashioned way (miles driven divided by gallons consumed ..... like figured with paper and pencil).......:)


humfrz

I've ran it in my last 3 cars 1 was a 2000 with 75k then a 2015 with 5k and then this one. All of which had noticable improvements in gas milage (more so on the 2000) as well as how quickly the engine revs. The 2015 was turboed and the turbo spooled about 500 rpm sooner then before the treatment. http://ceramiclubricationtech.com/Cerma_Tests.html I don't care what haters say, it works. It doesn't do miracles, it just helps protect and smooth engine operation. It's a one time treatment so it's not like you're throwing $90 extra at your car every oil change.

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I wonder why the vehicle manufactures don't add that to their car's engines when they are first filled with oil ...... :popcorn:


humfrz

Because the treatment would stick to the imperfections within the engine that are normally worn down during the "break-in" period and harden them. It says clearly not to use the treatment until after the manufacturers recommended break in period. You obviously know nothing of this product and are just trying to start arguments for fun. :popcorn:

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Thanks for answering my question.


humfrz

Did you run exactly the same cars at exactly the same times under exactly the same conditions to determine there was a difference?
The turbo spooled sooner because of an additive?
You know what ceramics really are and how they are applied?
The "tests" shown by the manufacturer are your proof?

https://wranglertjforum.com/attachme...rg_-jpeg.1375/

Nice use of the word "haters" as a pre-emptive strike for anybody that try's to tell you the truth about that stuff.

This "certificate" IS ONE OF THE FUNNISEST FUCKING THINGS I HAVE EVER SEEN AND 100% MADE UP bullshit.
https://www.cermastore.com/images/do...TV_Program.pdf

http://ceramiclubricationtech.com/Cerma_Tests.html The turbo spools faster because of the reduced friction same concept behind why it improves gas mileage.

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