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Old 05-13-2011, 09:45 AM   #21
electech
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Originally Posted by justy View Post
Keep in mind that more weight (gallons) means worse mileage, too!
I have noticed that SE models with less options show 38 HWY MPG and SEL's and Titaniums show 37!! On the window sticker that is.
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Old 05-13-2011, 11:20 AM   #22
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Geeze people.. LAx. all these cars are brand new, give the motors time to loosen up a bit.

Also the car estimates your MPG..
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Old 05-14-2011, 03:56 AM   #23
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I have noticed that SE models with less options show 38 HWY MPG and SEL's and Titaniums show 37!! On the window sticker that is.
The Selectshift lowers the epa mpg by 1. Who knows if there's any real world change or not.
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Old 05-14-2011, 08:00 AM   #24
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EDIT: The biggest concern isn't the mileage for me, it's the tiny gas tank. Really wish they had put at least 15 gal in this (it's listed as 12.4). Even my old 2002 Jetta had a 14.5 gal tank. Great mileage would be even better with great range...
I actually like the smaller gas tank on my Fiesta, I know it's all in my mind, but it just makes the gas fill-ups easier to accept these days. Big difference in filling it up for about 35 bucks, even though I'm only going to go 400 miles or so, when I used to get 500 miles on my previous car.
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Old 10-24-2011, 06:49 PM   #25
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I also have the trans shifting wierd at low speeds and the car seems to almost have an EGR problem.
the trans-shifting problems will go away when people discover they're driving an electrically shifted manual transmission and not a true "automatic" it's a shame Ford didn't explain this better to buyers, i hear a lot of complaints about the Powershift and once i explain to people what exactly they have and how it works it all makes sense why:

- you hear the gear shifts and yes it sounds a little like a grinding sound
- initial engagement might seem like it's quick and makes the car lurch instead of slowly applying torque to the tires like a hydraulic automatic
- there is no dipstick, it's not sealed, just uses gear oil and is checked exactly like a traditional MANUAL transmission


about the "egr problem" don't quote me but i'm pretty sure the TI-VCT I4 doesn't have an egr system, it's not required by the EPA for vehicles which have exhaust cam variable valve timing. the tube from the intake-air duct looks like it's more designed as a vacuum actuator for a couple peripherial sensors and exhaust gas recirculation is minimal at best. I may be completely wrong about the egr thing tho, i haven't had a chance to break this engine down much... spending too much time driving the car :)
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Old 10-24-2011, 06:57 PM   #26
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Originally Posted by Cleric670 View Post
the trans-shifting problems will go away when people discover they're driving an electrically shifted manual transmission and not a true "automatic" it's a shame Ford didn't explain this better to buyers, i hear a lot of complaints about the Powershift and once i explain to people what exactly they have and how it works it all makes sense why...
This is true, but Ford definitely released a TSB to fix low-speed shudders and harsh shifting if your build date is on or before 8/12/2011. I can't imagine everyone having an issue, though. If your car is a new build and you're complaining, then you're probably just being a baby.

As for the people whose cars start shaking and spilling coffee everywhere while idling at a red light or crunching while downshifting, the TSB fixed that for me.

But since is the average MPG forum - as far as I can tell, the TSB didn't effect my gas mileage for the better or the worse.
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Old 10-24-2011, 07:26 PM   #27
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Does this effect the "Miles to E" read out? Is this number to be trusted if there are problems with it calculating the average mpg??
Yes it will! It calculates the miles to empty by looking at the fuel level and the average fuel mileage. If the average mileage is not correct the calculation is not going to be correct. But the closer you get to empty the less error.

For example if you are getting 30 mpg and fill the tank its going to predict 30 x 12.5 = 375 miles. If the car has been calculating an average of 25 mpg then its 12.5 x 25 = 312. At 1 gallon in the tank it will be predicting 30 and 25. Ultimately if the fuel gauge is dead accurate either way the car will run out of gas when it says zero miles to empty.

However, i would be more concerned about the accuracy of the fuel gauge when getting close to E. The fuel gauge is run by a float that gives a linear output as it goes through its stroke from E to F but because of the shape of the tank each inch of stroke does not equal the same volume of fuel.

BTW, my mileage by the display is pretty consistently 0.8 mpg low. And a full tank typically starts out at a little over 400 miles depending on the average from the last trip average.
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Old 10-24-2011, 09:52 PM   #28
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Originally Posted by Dgc333 View Post
Yes it will! It calculates the miles to empty by looking at the fuel level and the average fuel mileage. If the average mileage is not correct the calculation is not going to be correct. But the closer you get to empty the less error.

For example if you are getting 30 mpg and fill the tank its going to predict 30 x 12.5 = 375 miles. If the car has been calculating an average of 25 mpg then its 12.5 x 25 = 312. At 1 gallon in the tank it will be predicting 30 and 25. Ultimately if the fuel gauge is dead accurate either way the car will run out of gas when it says zero miles to empty.

However, i would be more concerned about the accuracy of the fuel gauge when getting close to E. The fuel gauge is run by a float that gives a linear output as it goes through its stroke from E to F but because of the shape of the tank each inch of stroke does not equal the same volume of fuel.

BTW, my mileage by the display is pretty consistently 0.8 mpg low. And a full tank typically starts out at a little over 400 miles depending on the average from the last trip average.
I've noticed with my driving habits that I get about 50-60mi before my needle moves and then about 60-70mi between notches on my gauge... so... 50+60+60+60+60 = ~290 when I fill up, average fill up nets me about 10.5 gallons.. so another ~2 gallons and I'm right around 350mi per tank, which is almost exactly where my DTE always sits. So my mileage calculator is rarely spot on but my DTE serves it's purpose pretty well.
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Old 03-29-2012, 11:58 AM   #29
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Talking MPG Break In

Just wanted to give my 2 on the mpg. I drive mostly highway, I'd say 90% of the time on every fillup, 70 miles everyday. For the first 5000 miles on my Focus 2012 SEL it would average 33.4. About 2 weeks ago I did the performance update Gen2 v3.02, but mind you this was about 4900 miles and getting the 33.4 mpg. This last week I reset the trip, still showing 33.7 average, then drove 210 miles out of town for a one stop pickup, then 210 miles back and filled up with gas and showing avg of 33.9, reset the trip. Got home, parked car, then the next day started the car and it showed 37.4 mpg. Talked to the Ford service tech and said it was going through a break in period and he always sees this. All I can say is that I hope the mpg is consistent. I love seeing technology getting better.
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Old 03-29-2012, 08:00 PM   #30
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It does not use odometer readings, trip or other to calculate mpg. It uses data from the ecm from injector pulse timing and probably some other data to calculate avg mpg. It is by no means precise but it is designed to be fairly accurate. In my old Ford truck forum the guys refered to them as the lie-o-meters. I am on the 5th tank of fuel at about 1700 miles and avg is showing 31.2. I hand calculated the last tank to 31.7. It took a while for the display to creep up to this point and showed consistently lower numbers for the first 4 tanks. The overall avg of all tanks show far calculates out to 33. I do about 25% highway and 75% suburban stop and go. Was hoping for a bit better but 31 is still better than 19 and I'm still pretty confident it will creep up some more, particularly if I can shave some pounds of my foot.
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