Best Highway Fuel Economy for 3.7 V6??? - Page 2 - Ford Mustang Forum
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Originally Posted by gmxblazer View Post
I don't think the 4.0 are bad at all. My old one would hang with this one til 60 and I used to routinely get 29 mpg on highway and occasionally 31-32 with modifications. I think the 3.7 is a Great upgrade but I still appreciate any mustang it's better than everyone driving prii.

@gmxblazer It's bad for me in the way that I'm a pretty lead foot driver, and I can see myself burning mpgs all in the name of some good driving fun with the 4L. Newer V6s not so much they don't have to work as hard. I avg 21 in the city and turn into Spongebob when no cars/cops are around. Except I don't hit objects nor pedestrians.

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Mine said 99.9 when I hit reset while going down the off ramp. Does that count?

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@AMShaneLesky no hand calculations. But next time I go on a long road trip I'll be sure to compare gallons spent at the pump, at refill to what the CPU is reading and all that good stuff.
Okay cool! I'm interested to see what you come up with by hand calculating it. I don't imagine it will be too far off by any means, but it's always nice to do the math.

Keep me updated!

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I find that hand calculation and the computer are always fairly close. Both are an approximation anyway, with the computer probably closer since it is measuring how much fuel it ran through the injectors and how many miles the car has been driven.

With hand calculation it isn't any "more accurate" because you are assuming that when you fill up that you put exactly the same amount of fuel in each time. But temperature, pressure of the fuel pump, vapor in your tank, all affect how much you put in each time. The only thing you know for sure is how many miles you drove. You don't know if you filled up the tank to the same exact spot it was sitting at when you filled it last time though. So, it is still an approximation.

This afternoon for example the computer said I had used 10.21 gallons since the last fill up. But the pump only put 9.90 gallons in before it stopped. (I have an app on my phone that I use to track fill ups). So I likely used more gas than the pump would put in given the much hotter temp when I filled up this time and the vapor in the tank shutting the pump off. Which one was the more accurate reading - they were within tenths of each other.

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You're not correct. If you were, mpg calculators would be perfectly accurate. It calculates how much gas you're using based on a number of factors. That equation is used across the vehicle range so does not necessarily take into account all the variations of the engine configuration.

The manual measuring method is most accurate. You know how many miles you drove and you know how much gas you put in.
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Quote:
Originally Posted by BerryBlack37 View Post
Hello everyone. I recently took a trip to Thompson International Speedway and averaged 37...
I too have hit a sustained 37 MPG Highway several times as well.

My car had 2.73s, auto, SCT tune, CAI.

I still firmly believe someone can hit 40 MPG Highway with the right tune, setup and aero stuff. It's doable.
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I have a 2014 with perf pkg, recently added Borla exhaust, Steeda CAI, BBK t-body and a tune. All my driving is in town (stop and go), with the changes I've jumped from 16.9 to 18.4. But, then I now use 91 octane, so probably still costing me more.

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Quote:
Originally Posted by <3_3.7 View Post
you know how much gas you put in.
Again, you are assuming that the amount of gas you put in is exactly the amount that you burned up. And that isn't the case necessarily. There are factors that affect that - like temperature, pressure of the pump and sensitivity of the pump, vapor in the tank ..... so while yes you know how many miles you traveled, and yes you know how much gas you just put in, you don't know if that is an accurate reflection of how much gas you burned.

So it is all just an estimate and no more accurate than the computer in your dash or the piece of paper in your hand with your hand calculation on it.

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Neither of us are Ford engineers so we're going to have to agree to disagree.
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Neither of us are Ford engineers so we're going to have to agree to disagree.
True ---------- and agreed!

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Hello everyone. I recently took a trip to Thompson International Speedway and averaged 37 mpg traveling I-395 N. I'll admit there were more downhills than uphills and I had my cruise control set at 55 mph, no A/C. The EPA rates the Mustang at 19/31.

But get this- I currently have a 93 Bama Tune, Aluminum Driveshaft, staggered 18" wheels, and AFE cold air intake installed. Automatic. 2.73 gearing. So can anyone/has anyone out there beat 37 mpg highway fuel economy?
The best I got on last weekend's roadtrip was 36mpg actual / 33 computer on Highway 395 southbound. Drove 293 miles still only about at 1/2 tank when I stopped, driving 65-80mph, passing cars, 90+ degrees temp, A/C on, 91 octane. Averaged 32.8mpg actual for the whole 1,513 mile trip on two-lane backroads while passing slower traffic, av speed around 75mph. To say I'm happy with the mileage and performance is an understatement.
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Quote:
Originally Posted by JD08 View Post
Mine said 99.9 when I hit reset while going down the off ramp. Does that count?
I lol'd.


My best is 32 MPG hand calculated on a 1100 mile trip from Houston, TX to Moline, IL. I was going 75-77 mph the whole time. I believe I only had to make 4-5 stops (I filled it halfway).

Bone stock. 2.73 rear end.

EDIT: It is an auto.
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With a good tailwind and a truck 60 yards in front, I drove exactly 200 miles on 5 gallons of gas. Cruise set to 65.

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How many miles after break in did you get that good MPG?

My 2014 V6 manual Mustang only has 1400 miles for now. I usually get only 16 MPG with half highway and half city driving. I do some heavy acceleration occasionally.

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How many remember to 48 mpg duration test down on a closed track with a 2011 Mustang V6 that was traveling in 6th gear around 44 mph if I remember correctly?

BRISTOL, TN., June 24, 2010 – The 2011 Ford [COLOR=blue !important][COLOR=blue !important]Mustang[/COLOR][/COLOR], which made history when it became the first car ever to deliver more than 30 mpg and 305 horsepower, has set a new record by running 1,457 laps at Bristol Motor Speedway while averaging 48.5 [COLOR=blue !important][COLOR=blue !important]mpg[/COLOR][/COLOR].

The Mustang 1,000 Lap Challenge was designed to demonstrate that a stock production Mustang V-6 could run 1,000 laps and 533 miles on a single of tank of fuel. With the aid of fuel efficient driving techniques by Ford engineers, the Mustang far surpassed its goal of 1,000 laps.

“To see a Mustang post average fuel [COLOR=blue !important][COLOR=blue !important]economy[/COLOR][/COLOR] of 48.5 mpg while running at Bristol is impressive,” said Dave Pericak, Mustang chief engineer. “The new V-6 engine along with the advanced six-speed transmission in the car is a key element in delivering both fuel economy and performance for Mustang.”

Ford is committed to being a fuel economy leader in every segment it competes in and Mustang’s class-leading fuel economy along with other Ford fuel economy leaders like the Ford Fiesta, Fusion Hybrid and new Lincoln MKZ Hybrid, America’s most fuel efficient luxury sedan.

The Challenge team, which included NASCAR star David Ragan and four [COLOR=blue !important][COLOR=blue !important]Ford [COLOR=blue !important]Mustang[/COLOR][/COLOR][/COLOR] engineers, completed the challenge in 17 hours and 40 minutes, showing off the 2011 Mustang V-6’s class-leading fuel economy by averaging 48.5 mpg over the course of the 776.5 miles logged during the Challenge. That distance is more than the two complete NASCAR Sprint Cup events that take place in Bristol every year.

Ragan pushed the Mustang past the 1,000-lap mark at 7:26 p.m., 12 hours and 26 minutes into the Challenge, but the car wasn’t close to being out of fuel. Mustang engineer Seong Park was behind the wheel when it finally came to a halt (on the backstretch) of the famed NASCAR track at 12:41 a.m. local time.

Other Mustang Challenge team drivers included Tom Barnes, Jonathan Mehl, Carl Ek, who along with Park each took one-hour driving stints during the event, which took place at the world’s fastest half-mile track.

“When we hit 1,000 laps we still had a quarter of a tank of gas left,” said David Ragan, driver of the No. 6 UPS Ford Fusion for Roush Fenway Racing, and the man who drove the 2011 V-6 Mustang past the 1,000 lap mark. “The last driving stint before I passed 1,000 laps I was averaging 43.7 miles a gallon and that is unbelievable. These guys have run the distance of more than two Sprint Cup races at Bristol and they still have fuel left. Congratulations to everyone behind the Mustang and to everyone at Ford, because this 2011 Mustang V-6 is really something special.”

A team of Ford engineers prepared for the challenge by implementing fuel efficient driving tips like minimizing the use of air conditioning, steady and consistent driving, avoiding sudden stops/starts and by keeping the RPMs low. The engine in the Mustang is powered by a lightweight, all-aluminum 3.7-liter dual-overhead-cam (DOHC) V-6 engine that uses advanced engineering to deliver its combination of power and economy. Twin independent variable camshaft timing (Ti-VCT) adjusts the valve train in microseconds depending on driver inputs, further contributing to the engine’s overall efficiency. The Mustang used in the challenge is a [COLOR=blue !important][COLOR=blue !important]stock[/COLOR][/COLOR] production vehicle that can be purchased through a Ford dealer.

“This is beyond our wildest dreams,” said Tom Barnes, the lead engineer for the Ford Mustang 1,000 Lap Challenge. “There have been a lot of people who have done a lot of things in preparing this 2011 Mustang V-6 to run the Mustang 1,000 Lap Challenge and have the success we have had today. It was great when we went past the 1,000 lap mark with David, but nobody could ever imagine that we still had five hours ahead of us. This is a fantastic feeling and it shows again what a great car the 2011 Mustang V-6 is.”


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