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Thread: MPG inconsistencies (answered!) Reply to Thread
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Topic Review (Newest First)
01-11-2013 11:42 PM
SydneyRoo the stupid part is..... we canadians don't even use gallons. Not Imperial gallons, not US gallons. We use litres.

And at that, if you do buy a gallon of something (ie, washer fluid), it's sold by the US gallon.

I really, REALLY hate they use imperial MPG to advertise car fuel economy up here. It's extremely misleading.

...... the kicker is, if we Canucks switch our gauge display to "Miles/Gallons" on our cars, it's based on US MPG, not imperial... I prefer US figures anyway.

stupid

stupid

stupid
01-09-2013 08:03 AM
c5karl
Quote:
Originally Posted by thisisbenji View Post
The gas mileage was so much better than the Focus.
According to Edmunds:

1995 Honda Civic sedan curb weight: 2313 lbs.
2013 Ford Focus sedan curb weight: 2907 lbs.

The '13 Fiesta is closer in weight and size to the '95 Civic than either the '13 Focus or the '13 Civic. Probably would get you similar fuel economy, too. Newtonian physics still rule the day.
01-08-2013 11:35 PM
thisisbenji
Quote:
Originally Posted by felixdd View Post
Even for a manual?
Yup. For the first few years I drove manual (in my 95 civic 1.6l vtec) I would coast in N to stops. I averaged about 34-36 MPG, yet when I started downshifting to a stop my mileage instantly shot up to above 40 MPG every tank usually at about 42. The cool thing about that car is you could feel the exact RPM that the ECU started to give the car fuel as the RPMs fell. So if I was coasting to a stop in 3rd gear I could feel when the fuel came back on, I would downshift just before that point.

I miss that car (my younger sister has it now), I might try to steal it back. The gas mileage was so much better than the Focus.
01-07-2013 10:17 AM
kam327
Quote:
Originally Posted by c5karl View Post
I've seen this mentioned on this forum several times, but are we sure the Focus has this feature? This Ford document, dated last June, does not list the Focus as one of the cars with ADFSO.

http://media.ford.com/images/10031/Ford_Tech_Fuel.pdf
Also the 2013 Source Book says we have it.
01-07-2013 09:24 AM
suss6052
Quote:
Originally Posted by c5karl View Post
I've seen this mentioned on this forum several times, but are we sure the Focus has this feature? This Ford document, dated last June, does not list the Focus as one of the cars with ADFSO.

http://media.ford.com/images/10031/Ford_Tech_Fuel.pdf
Quote:
Originally Posted by dan50 View Post
Maybe it doesn't. I thought this feature was almost universal but maybe not. Seems odd that Ford would go through the trouble of installing active grille shutters and not this, but maybe it's harder to implement on cars with manual gearboxes or DCTs. Learn something new every day...
That is an old and incomplete list of specific vehicles mentioned that have ADFSO, its basically already been confirmed that the 2012+ Focus does infact have ADFSO based on scangauge readings and reports from Ford engineers.

This was discussed at length here: http://www.focusfanatics.com/forum/showthread.php?t=281522
01-07-2013 09:08 AM
dan50
Quote:
Originally Posted by c5karl View Post
I've seen this mentioned on this forum several times, but are we sure the Focus has this feature? This Ford document, dated last June, does not list the Focus as one of the cars with ADFSO.

http://media.ford.com/images/10031/Ford_Tech_Fuel.pdf
Maybe it doesn't. I thought this feature was almost universal but maybe not. Seems odd that Ford would go through the trouble of installing active grille shutters and not this, but maybe it's harder to implement on cars with manual gearboxes or DCTs. There are are posts here that seem to conclude the Focus has this feature, but maybe it isn't the "aggressive" fuel cut-off described in the Ford document.
01-07-2013 08:56 AM
c5karl
Quote:
Originally Posted by dan50 View Post
This has been said before, but to maximize fuel economy don't coast in neutral. While this seems counterintuitive, when coasting in gear fuel supply is generally cut-off as the mechanical connection to the wheels keeps the engine "running". If you shift to neutral, fuel has to be supplied to accomplish the same thing. This won't make a big difference, but manufacturers engineer it this way for a reason.
I've seen this mentioned on this forum several times, but are we sure the Focus has this feature? This Ford document, dated last June, does not list the Focus as one of the cars with ADFSO.

http://media.ford.com/images/10031/Ford_Tech_Fuel.pdf
01-07-2013 06:35 AM
kam327
Quote:
Originally Posted by felixdd View Post
That makes more sense then. Crazy canuck/euro testing

Does the "don't coaset in neutral" thing apply for manual cars too then?
The US EPA rating system changed in '08 and used to be more optimistic too. The '07 Focus window sticker said 27/34, but the "new" ratings (under the '08 system) on fueleconomy.gov are 23/31. That would suggest that the '12 Focus manual would be rated at 29/39 under the old system, much closer to the current Canadian rating of 30/42.
01-07-2013 05:47 AM
suss6052
Quote:
Originally Posted by doublej View Post
Hello "suss6052", your calculations might change if you use the right conversion factor.... 4.54 litres to a imperial gallon compared to your US gallon which is only 3.78 litres.
The calculation is correct even if I wrote down a slightly lower number for the imperial gallon, the point wasn't the specific size so much as it was the fact that the imperial gallon contains 20% more volume and therefore the published figures are 20% apart before accounting for differences in test methodologies.

Therefore subtracting the energy difference (a factor of 20%) the only remaining difference is that of the tests run to get the fuel economy figures.
01-07-2013 05:41 AM
doublej Hello "suss6052", your calculations might change if you use the right conversion factor.... 4.54 litres to a imperial gallon compared to your US gallon which is only 3.78 litres.
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