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What kind of gas mileage are you getting?

16Fastback

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I'm sure this this post wasn't wasn't intended for for EcoBoost and I would have preferred the GT but at the time it was $10,000 more. I'm running 93 octane with a COBB stage 2 tune lately this has been my highway miles (see attached photo)with 27-28 local miles.

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wingnutt

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I'm sure this this post wasn't wasn't intended for for EcoBoost and I would have preferred the GT but at the time it was $10,000 more. I'm running 93 octane with a COBB stage 2 tune lately this has been my highway miles (see attached photo)with 27-28 local miles.
shhhhh, just don’t tell @honeybadger as he gets the shakes when you mention 4cylinders 🫠
 

DRU842

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Just
I'm sure this this post wasn't wasn't intended for for EcoBoost and I would have preferred the GT but at the time it was $10,000 more. I'm running 93 octane with a COBB stage 2 tune lately this has been my highway miles (see attached photo)with 27-28 local miles.
Just to fill out the comparison, I regulary get 32+mpg (US) on the freeway & typically 26mpg around Sydney in my custom tuned Ecoboost running 95 equivalent, 145,000+km.
 

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With gasoline being so expensive right now, have you changed your driving habits to increase your fuel economy? Right now I'm using 11.4l/100kms which translates to 20.632 mpg. I find I'm using 5th and 6th gear more often than not. And this is driving mostly on 80 km/h (50 mph) and 60 km/h (37.28 mph) on a 16km (10 mile) each way daily commute. I've been as high as 13.6l/100km (17.3 mpg) and as low as 9.4l/100km (25 mpg). I only use Shell 93 octane with the occasional tank of Petro-Canada 94 octane. My car is a 2021 Mustang GT with the Performance Pack, non-active exhaust, no magnaride and the 6-speed with 3.73 rear.
One does not buy a GT if you’re worried about gas mileage.
 

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JVO21303

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I can get anywhere from 8-21mph, depending how I'm driving. I didn't buy this car to worry about how much gas it uses. Obviously, the lower the mileage, the more fun I'm having. :rockon:
 

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With gasoline being so expensive right now, have you changed your driving habits to increase your fuel economy? Right now I'm using 11.4l/100kms which translates to 20.632 mpg. I find I'm using 5th and 6th gear more often than not. And this is driving mostly on 80 km/h (50 mph) and 60 km/h (37.28 mph) on a 16km (10 mile) each way daily commute. I've been as high as 13.6l/100km (17.3 mpg) and as low as 9.4l/100km (25 mpg). I only use Shell 93 octane with the occasional tank of Petro-Canada 94 octane. My car is a 2021 Mustang GT with the Performance Pack, non-active exhaust, no magnaride and the 6-speed with 3.73 rear.
I'm kind of amazed how we "Western" folks complain about high gas prices; we're definitely spoiled. I remember reading a post about gas prices and I think the guy was in Netherlands with his Mustang GT and he posted that he pays over $12 a gallon for premium there (he converted their currency and volume to gallons and U.S. dollars).
 

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I know most of the posts are for GT’s, but I have a 2018 Ecoboost PP. I have averaged 25.8 over 102,000 miles. That’s hand calculated. As Gman7176 pointed out, Ford’s calculations are optimistic.
That's why we change the setting in engineering mode. I changed mine by .2 and it now is pretty close in actual mpg.
 

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From Google.

Ford Mustang GT is not a mainstream or high-volume popular car in the Netherlands. While it has a dedicated fan base and active local car clubs, high-displacement V8 sports cars face extreme luxury and CO2-based "gas guzzler" taxes (BPM) in the country, making new models cost well over €130,000.

A Mustang GT is a little bit like a Ferrari in the Netherlands.
 

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That's why we change the setting in engineering mode. I changed mine by .2 and it now is pretty close in actual mpg.
I thought about changing it, but the variation changes based on how much time is spent in stop-n-go traffic vs time spent on the highway. Since I record actual mpg in a spreadsheet after each fill-up, I decided to just leave it.
 

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34.9mpg.webp

This is from my 2019 GT Auto, this was from a two day trip cruising at between 75 and 80mph. This is UK gallons so a bit bigger than US gallons. We are paying $10 a gallon at the moment for 98 in the UK.
 

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