Actual gas mileage receiving - Ford Mustang Forum
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post #1 of 22 (permalink) Old 09-24-2018 Thread Starter
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Actual gas mileage receiving

Hey guys, as you may recall, I purchased a 2017 Mustang EcoBoost almost two weeks ago. Today I went on a 400 mile road trip, all freeway, with an average speed of 65 mph, on cruise control, and I am using 91 octane fuel (the best you can get here in California), I topped out at 28.7 MPG's. Thus I am curious as to what the actual MPG's are people around the county (world) are actually getting out of their 2015-2017 Mustang EcoBoost (and heck, GT's too).

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post #2 of 22 (permalink) Old 09-24-2018
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The last tank I averaged 20 mpg - I drive 50 miles round trip on weekdays and itís full pedal to the floor on weekend as I zip around town.

This morning I used cruise control and it seems to really help mpg.

I also think the top down has an impact on mpg.

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post #3 of 22 (permalink) Old 09-25-2018
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Iím always at 25.
I drive mostly highway; 60 miles each way from home to work and vs versa.


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post #4 of 22 (permalink) Old 09-25-2018
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I bought my 2016 new. A larger B-W turbo with intercooler and a complete Borla intake and exhaust has been installed with the appropriate tune. I drive only about 13 miles per day back and forth to work at city speeds, but I am often on the highway or cruising through the nearby forest with the pedal to the floor. I am by no means a conservative driver and I average 25.1 MPG. I have not reset that since I first bought her. So I think that pretty great on a 357 hp, 4-cylinder sports car.
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post #5 of 22 (permalink) Old 09-25-2018 Thread Starter
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Although I topped out at 28.7 mpg on a 400 mile freeway drive, I typically get 22-24. I know Ford claims 30 MPG and yes, I know they are never correct. But am curious. At 22 MPG, maybe I should have just forked out the extra $10K for a GT.
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post #6 of 22 (permalink) Old 09-25-2018
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I can get 24/25 on a all freeway trip in my GT.

I think overall averages are where the Eco shines though. Hope so anyways. My overall average is only 18.4, with a freeway/city split of roughly 70/30. My in town MPG kills my overall. I think I get 12/13 in town.

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post #7 of 22 (permalink) Old 10-01-2018
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I am currently at just over 4K km. My overall average is 9L/100km which in American is 26 MPG. The best that I have seen during a trip (top up) was 7.2L/100km or a hair under 33 MPG but then I ran into traffic and by the time I pulled in the driveway it wasn't as good as that. The trip out that day with the top down was 7.6L/100km or ~31 MPG.
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post #8 of 22 (permalink) Old 10-01-2018 Thread Starter
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Quote:
Originally Posted by johnnybeerotten View Post
I am currently at just over 4K km. My overall average is 9L/100km which in American is 26 MPG. The best that I have seen during a trip (top up) was 7.2L/100km or a hair under 33 MPG but then I ran into traffic and by the time I pulled in the driveway it wasn't as good as that. The trip out that day with the top down was 7.6L/100km or ~31 MPG.
WOW, impressive. I routinely am getting 22-25 MPG's. I grant I was expecting a bit more on my straight highway 400 mile road trip than 28.7, as I have taken other cars on that same trip and I got the best MPG's of each respective car by making that same road trip.
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post #9 of 22 (permalink) Old 10-02-2018
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Quote:
Originally Posted by johnnybeerotten View Post
I am currently at just over 4K km. My overall average is 9L/100km which in American is 26 MPG. The best that I have seen during a trip (top up) was 7.2L/100km or a hair under 33 MPG but then I ran into traffic and by the time I pulled in the driveway it wasn't as good as that. The trip out that day with the top down was 7.6L/100km or ~31 MPG.


Does top down affect MPL for you?
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Does top down affect MPL for you?
I would say yes, as you would get more turbulence with the top down. When I first got the car I was doing my work commute (~25 km, mostly highway in relatively good traffic as I am going the opposite way) top down both ways, weather permitting. Then I started driving in with the top up and home down, so my overall driving is probably 70/30 top down/up. I have just crossed 5K km and am showing a lifetime average of 9L/100 km (26 mpg/US gallon). However, the last couple of tanks have crept up on consumption, the last one being 9.8 (24 mpg). I am wondering if this coincides with the change to "winter" gasoline which occurred around the beginning of October.
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Just an add to my earlier post. I am now on winter rubber (235/55-17) and did a trip from Toronto to Niagara Falls, NY on Saturday, close to 300 km in total. Some delay idling at the bridge going, less coming back and a bit of in town driving in and around NF. I was showing 7.6 on the dash, which is just under 31 mpUSg. However, I have recently put all my receipts and mileage into a spreadsheet and not that the dash is a little optimistic, by about 0.5 litres, so on that assumption the trip returned about 29 mpUSg.
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Might be just me but my '14 averages about 17 to 18 lol, I think I just drive WAYYYYY too fast


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post #13 of 22 (permalink) Old 11-19-2018 Thread Starter
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Just last week I topped out at 31.3 MPG on the freeway. But I normally get 21 City with 26 highway with a combined of 24 MPG's.
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FWIW my 2018 GT with the automatic averages 22 just driving around town and some highway mixed in. It gets 26.5 (on paper) on a road trip from Richmond, VA to central WV through the mountains so it looks like there isn't much of a difference with the 5.0 engine. I run cheap 87 octane and have never heard it ping.
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Still driving 60 miles each way I95. Very little city driving. Just hit 100K on my 2015. Still avg 25.1.



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