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Real World Gas Mileage on Performance Package

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Old 04-26-2012, 08:47 PM   #1
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Default Real World Gas Mileage on Performance Package

I have a 2012 V6 Performance Package, and I'm averaging 20-23mpg (according to the trip computer). This is with resetting the calculation at each fill up, over 2 or 3 fill ups. I drive 70 miles round trip to work, mostly highway at 65-80mph. In between I'm driving enthusiastically whenever the opportunity presents itself, which isn't as often as I'd like :-)

What are you guys getting?
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Old 04-27-2012, 09:41 AM   #2
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Ouch. I'm non-PP so I can't give you a direct comparison. I've never dropped below 27 mpg.
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Old 04-27-2012, 04:54 PM   #3
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Quote:
Originally Posted by LieutenantDan View Post
I have a 2012 V6 Performance Package, and I'm averaging 20-23mpg (according to the trip computer). This is with resetting the calculation at each fill up, over 2 or 3 fill ups. I drive 70 miles round trip to work, mostly highway at 65-80mph. In between I'm driving enthusiastically whenever the opportunity presents itself, which isn't as often as I'd like :-)

What are you guys getting?
I don't have the performance package and I average 20-23 on mine, mix of highway and city driving (I push it hard every chance I get). My mileage has been steadily getting better as I get her broken in, started off with 15 MPG on according to the computer.
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Old 04-27-2012, 04:56 PM   #4
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I just got my V-6PP today. I need to break it in before I can give you an idea of its mileage.
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Old 04-27-2012, 09:12 PM   #5
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Quote:
Originally Posted by LieutenantDan View Post
I have a 2012 V6 Performance Package, and I'm averaging 20-23mpg (according to the trip computer). This is with resetting the calculation at each fill up, over 2 or 3 fill ups. I drive 70 miles round trip to work, mostly highway at 65-80mph. In between I'm driving enthusiastically whenever the opportunity presents itself, which isn't as often as I'd like :-)

What are you guys getting?
I get about the same, and have about the same comute, around 30 miles one way, 75% hwy. Right now I'm trying only 70 mph on the hwy instead of 80, and driving normally off the hwy. It looks like I'm going to get a nice mpg improvement. Of course I can still put the hammer down when I want, but want to see what it can do mpg wise without driving ridiculously slow.
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Old 04-27-2012, 09:44 PM   #6
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Yeah, 72-75mph seems to be the edge of where your mpgs start to taper off. I typically stay below 75 and can manage right around 28mpg with 3.73 gears, but when I start doing 80, my mpgs will be something like 25mpg.
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Old 04-27-2012, 09:46 PM   #7
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By the way, I originally had 3.31 gears but without the PP when I bought my car and averaged upper 29mpgs on the highway and 24-25mpg mixed driving.
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Old 04-27-2012, 10:01 PM   #8
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I know with the 4.6L in my '07 GT that the mileage really begins to take a dive above 1800 RPM. It's about the same with my 4.0L SUV and with most other folk that I spoke to. My GT's mileage is a decent 24 MPG (for a V8) at 1900 RPM doing about 70 MPH and the fuel mileage increases by 2 MPG at 60 MPH. I've had a number of pump-to-pump hand calculations showing 28 MPG when I was "forced" to run 55 MPH on each fill-up.

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Old 04-28-2012, 06:43 AM   #9
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I did a little experiment last night and set the cruise control at 55 the whole way home, and pulled 32 mpg. It really seems to be the case that once you get over 2k all bets are off.

Sucks getting passed by every Prius in Westchester though :-)
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Old 04-28-2012, 12:37 PM   #10
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I don't believe the rpm matters as much when cruising, as does the drag coefficient. The car has a lot more drag to overcome at 80 mph than it does at 55 mph. I'm seeing fairly good results just dropping from 80 to 70 mph (only a few hundred rpm lower).

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Old 04-28-2012, 12:43 PM   #11
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I've only got 400 miles on my 2013 V6 convertible, and am getting 18-19 mpg in mostly city driving. I could get a lot better mileage with a lighter foot, but that would defeat the purpose of getting the Mustang!
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Old 05-01-2012, 09:00 AM   #12
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I drive 60 miles a day, about 75% highway, at 70 and I consistently get 27-28, the readout usually reads a little low.
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Old 05-01-2012, 09:06 AM   #13
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It depends on how and where you drive. My 11 V6 gets around 24 mpg but that's heavily mixed.

When my wife and I had to actually take a long trip (all interstate) we got 29.4 mpg.

Said thing is my wife and I work in the same location, she gets 23/24 mpg going to and from work, and my GT gets 22/23 lol.
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Old 05-01-2012, 03:15 PM   #14
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I've only got 400 miles on my 2013 V6 convertible, and am getting 18-19 mpg in mostly city driving. I could get a lot better mileage with a lighter foot, but that would defeat the purpose of getting the Mustang!
Sounds about right. As much as the MPG is touted, you will not achieve this in city/parking lot traffic. It needs to get into higher gears to get those good MPG #'s, and that isn't happening at 40 and less, stop n go, parking lot pile-up type locations.

I hover around 20, with a tune. was less before the tune. When I get out on the weekends for trips, it gets into the mid-high 20's quickly and easily.

Grats on the '13, I'd lock down those tail lights of yours, they are the envy of many a 10-12 owners.
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Old 05-02-2012, 08:58 AM   #15
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Sounds about right. As much as the MPG is touted, you will not achieve this in city/parking lot traffic. It needs to get into higher gears to get those good MPG #'s, and that isn't happening at 40 and less, stop n go, parking lot pile-up type locations.

I hover around 20, with a tune. was less before the tune. When I get out on the weekends for trips, it gets into the mid-high 20's quickly and easily.

Grats on the '13, I'd lock down those tail lights of yours, they are the envy of many a 10-12 owners.
But I do mixed driving and I hit around 27 mpg consistently. I'm not sure why my numbers are higher than everyone elses. My last tank, I drove the car hard and still hit 25.7. Again, a good mix of city/hwy.
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Old 05-02-2012, 12:16 PM   #16
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But I do mixed driving and I hit around 27 mpg consistently. I'm not sure why my numbers are higher than everyone elses. My last tank, I drove the car hard and still hit 25.7. Again, a good mix of city/hwy.
Time of day can impact level of traffic, that might attribute for some of it. When I say parking lot traffic, I mean for reals.

Weekends when it's mixed, or just not 'parking lot traffic' I hit mid 20's for the most part. A trip downtown (about 20 miles) and I'll hit high 20's if there isn't an accident/parking lot traffic along the way.

The ATL hasn't hovered in the top ten cities with worst traffic for years for no reason. I'd give anything to be able to go out my door, and not be in bumper to bumper, 6:15am to 9pm at night.
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Old 05-02-2012, 05:03 PM   #17
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I am a little curious if the people who get poor mileage drive with the traction control on.

The first thing that happens when the tires start to slip is the rear brakes pulse on.
The second thing that happens is the gas is cut off.

The first may cause the mileage to drop, anyone else have experince with this?

I get great mileage, I always have TC off. I rarely get under 29 in mostly highway mixed driving, 6M 3.31 diff.
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Old 05-02-2012, 05:29 PM   #18
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I don't think TCS/ESC would affect mileage unless you are constantly driving through bad weather conditions. It should not be active at all during normal highway cruising.

One thing that would definitely affect mileage is the wheel/tire combo. The V-6PP uses wide, sticky Pirelli summer tires and heavy 19" wheels (someone here said the 2013 V-6PP/GTCS wheels weigh ~25lb). Lighter wheels (less rotational mass) and narrower, less grippy tires would net a slight MPG increase.
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Old 05-02-2012, 07:41 PM   #19
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I don't have the PP, (2.73 rear end)
I have noticed that my Mileage display constantly under reports the Average mileage by 2-4 mpg.
I am running a Steeda CAI and a 91 octane program, I think the worst gas mileage I have penciled out is about 26.6 mpg since that install. The best was around 32 mpg.
I am going to see if having the traction control off makes a difference starting with my next fill up.
I am pretty sure the biggest factor is drag, there is such a huge difference between the gas mileage at 65 and 80 that I don't think RMPs would calculate out to be the culprit.
I can cruise at 60-65 mph and get well over 35mpg, prolly more like 37-38.

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Old 05-03-2012, 09:02 AM   #20
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Quote:
Originally Posted by JayyVee View Post
Time of day can impact level of traffic, that might attribute for some of it. When I say parking lot traffic, I mean for reals.

Weekends when it's mixed, or just not 'parking lot traffic' I hit mid 20's for the most part. A trip downtown (about 20 miles) and I'll hit high 20's if there isn't an accident/parking lot traffic along the way.

The ATL hasn't hovered in the top ten cities with worst traffic for years for no reason. I'd give anything to be able to go out my door, and not be in bumper to bumper, 6:15am to 9pm at night.
Seattle has some pretty terrible traffic. The first 10 minutes of my drive are smooth, then the next 30 minutes are 0-20 range. It sucks. ATL is pretty terrible too.
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Old 05-03-2012, 09:02 AM
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