Difference in MPG

[8borerifle]

I had a 2012 Premium auto GT. Got 27.5 MPG driving to Myrtle Beach from Ohio. This was calculated! I have a 2015 EB auto PP Premium and drove from Ohio to Gatlingburg, TN. Going there I got 33.6 calculated. back was 32.7. Used 87 oct in the 2012 and 93 in the 2015. I average 25 all around in the Ecoboost, around 20 in the 2012 GT. Kicker is I could use 87 in the GT and never noticed any difference using 93 in it, while the 2015 NEEDS 93! The 2015 is a much nicer car than the 2012, one reason it is fully loaded where the 2012 only option was the auto trans in the Premium. I really like the low end torque of the Ecoboost, but flooring both at 40 MPH the GT was a real monster! Since where I live, you cant really use the power of the 5.0, I am satisfied with the 2.3 turbo.

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[Monopoly]

I wonder how different gas mileage ranges from 3.31, 3.55, 3.73 ratios? Esp hwy crusing.

 

[ForYourOwnGood]

I drive 99% highway on my EB with 3.31 rear end, at 73mph cruise in 6th I average 36.1 mpg calculated over two weeks. I have a 28 mile trip one way. If I add in a lot of town driving it drops rapidly because I can't keep my foot out of it lol.

 

[Gigantor]

I failed to mention that I only have 2000 miles on my car and already getting high 20's for gas mileage (highway). When I drive it like I stole it my mpg drops to
15 mpg or less

 

[BlackBeast]

So it looks like I'm forsure getting manual without pp for the lowest gear ratio. Now between the two engine platforms, which one would be predicted to depreciate in value faster?

 

[plc268]

It's probably good to take a lot of opinions and weigh them. Every time this topic comes up, you'll get GT owners that swear they get 28 MPG and you'll get EB owners that say they get 34. You'll also see GT owners say they get 12 and EB owners say they get 20.

You asked about the gears? I can tell you if you want better gas mileage, stick with the lower ratio gears like what comes on the base. I have the EB PP which comes with 3.55. Driving on the highway as easy as I can, I'll get 29. Mixed driving city/HW I get 25. I truly believe people with 3.15(?) or 3.31(?) gears get much better.

Either way, it is a very significant difference between EB and GT if people are really honest. The problem is you'll get a lot of GT owners that try to defend their gas mileage and tell a very exaggerated story that will leave you disappointed if MPG is your goal. I had the same goal because I was commuting about 100 miles/day when I bought the car. I really wanted the GT but was very concerned about MPG so went with the EB. Later I was questioning my decision after reading peoples posts here. Then I met a local guy with a GT and he told me (showed me) his mixed driving which was similar to mine he was getting 17 MPG compared to my 25.

The nice thing is even though I'm not commuting so far any more, I still love the EB! I miss the sound of my GTs, the EB sounds like crap but it is a lot of fun to drive, very light, nimble and peppy.

If you're looking at a 2015 EB, pay close attention to the build date. You'll want one that's engine was built in the Cleveland plant rather than Valencia Spain. Engines built before 3/15 were from Spain and we've had some engines blowing. Some time in March 2015, they moved them to Cleveland and made some minor changes in parts and assembly and they have been very reliable. Mine is a Spain engine and I've had no issues.

Yea, there's a lot of factors involved. Different engine/gearing combinations, driving habits, how close you live near a highway, your average cruising speed on a highway, your local terrain, etc.

I just don't care about gas mileage anymore. I have a 3.55 auto gt (which I've been told is geared similar to a 3.73 manual). I always drive it like I stole it when conditions allow, and regularly set my cruise control at 80-84 (5-9 over). I rarely encounter any traffic delays (so it's smooth sailing on the highway), and with a ~70/30 mix of highway/city driving, I'm getting a lifetime average of 18.5 mpg. Not terrible, IMO.

I just wish the gas tank was a little bigger for more range, but I've gotten used to it.

 

[ForYourOwnGood]

So it looks like I'm forsure getting manual without pp for the lowest gear ratio. Now between the two engine platforms, which one would be predicted to depreciate in value faster?

EB depreciates a lot. The GT is a better long-term value. If you want the 4cyl you better know exactly what you're getting so you aren't disappointed, if you have any doubts at all just get the GT and suck up the extra fuel cost.

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