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This is a discussion on MFD and Actual MPG way Off within the Gen II Prius Care, Maintenance and Troubleshooting forums, part of the Gen II (2004-2009) Toyota Prius Forums category; I fill up 'till the pump shuts off. The MFD is seems to be stuck on 47.2 MPG. Last fill ...


MFD and Actual MPG way Off

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Old 10-29-2008, 07:51 PM   #1
dorf
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Default MFD and Actual MPG way Off

I fill up 'till the pump shuts off.

The MFD is seems to be stuck on 47.2 MPG.

Last fill up took 5+ gallon for a total of some 311 miles. Yikes that 60 MPG.

The total mileage on the MFD and the Odomitor agree.

What's goin on ???? I understand about the bladder tank thing.
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Old 10-29-2008, 07:58 PM   #2
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Default Re: MFD and Actual MPG way Off

Are you resetting the MFD mileage when you fill up? If not, then it shows the cumilative MPG since the last time you reset it, which will change at a slower and slower rate as the miles add up.

If you are resetting the display, then likely you didn't get a full tank. You will know this if your next tank calculates out to way less MPG than you were expecting.

Over time this averages out.
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Old 10-29-2008, 09:33 PM   #3
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Default Re: MFD and Actual MPG way Off

yeah dorf, listen to narf. (<= just had to say that)

The 07s don't automatically reset like the 04/05s do. You have to hit the (reset) button in bottom-right corner of the Consumption screen.

Click the image to open in full size.
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Old 11-01-2008, 12:28 PM   #4
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Default Re: MFD and Actual MPG way Off

Thanks for the replies and the pic.

I didn't realize that there was a reset button (duh).

I haven't had to drive it in a while so I don't know what the result will be till after a few miles.

Thanks again all......
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Old 11-01-2008, 01:05 PM   #5
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Default Re: MFD and Actual MPG way Off

this post and its respondents have really made my day!!
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Old 11-03-2008, 02:33 PM   #6
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Default Re: MFD and Actual MPG way Off

Here's my up-date on the MFD

I reset it. The Energy monitor/meter screen seems to function alittle different (responds quicker)and the MPG are up to 49.9 Yeah !!!! for about 100 miles plus today !!!

Great car . Always learning something.

I've talked to numerous acquaintances about the Prius and guess what ???? They are not interested.

Seems like they are content on driving expensive gas guzzlers(cars and trucks). It is like a status symbol---I paid $97.00 to fill up my truck----etc.

I'm just confused ???? No wonder the US is in the shape it is.

comments anyone ???
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Old 11-04-2008, 09:44 AM   #7
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Default Re: MFD and Actual MPG way Off

Quote:
Originally Posted by dorf View Post
Here's my up-date on the MFD


Seems like they are content on driving expensive gas guzzlers(cars and trucks). It is like a status symbol---I paid $97.00 to fill up my truck----etc.

I'm just confused ???? No wonder the US is in the shape it is.

comments anyone ???

they are also the part of americana that carries an average $8500 balance on their credit cards....

as for me...

$5000: average monthly charge on the three cards we use
ZERO: average carry over balance
$860: cash back earned last year....should be slightly higher this year because of 3% cash back on all gas we buy.
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Old 11-04-2008, 11:26 AM   #8
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Default Re: MFD and Actual MPG way Off

Quote:
Originally Posted by DaveinOlyWA View Post
they are also the part of americana that carries an average $8500 balance on their credit cards....

as for me...

$5000: average monthly charge on the three cards we use
ZERO: average carry over balance
$860: cash back earned last year....should be slightly higher this year because of 3% cash back on all gas we buy.
True, Many Americans are not facing reality and only do when some catastrophe occurs, ie: losing job, house, car, running out of unemployment ins. Next step is the streeets. Call it outrageous if you like, but it is true. Fortuneately somewhere along that line most people correct thier bahavior. But excessive credit starts it. As for not wanting to converse about your Prius and its benefits, your coworkers would have to admit that you are right and that's difficult! Besides they are stuck with this monthly truck payment.
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Old 11-04-2008, 12:25 PM   #9
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Default Re: MFD and Actual MPG way Off

very true. now i need to have my head examined because

up until the 1st of October, my earnings on my stocks and 401K were merely disappointing... but in the month of October alone, i have lost 25% of the value of my 401K, and 35% of the value of my stocks...

now i actually kicked around the idea of moving a large chunk of the 401k into "guarranted" safe investment (it has only lost about 6% in value recently) this spring when gas started to rise as i figured it would put a major hurting on the industry especially after seeing the long haul trucker's plight. knew the ripple would grow from there as it filtered down to me and it was a big ripple to begin with.

well shoulda woulda coulda but DIDNT...
__________________


My Blue 2010 : Last tank 541.9 @ 49.48 pump (56.7 MFD) 5.54 CPM, 21 MPH, Lifetime:5442.2 miles 56.5 MPG pump. (62.22 MFD) 4.72 CPM. Summer MPG 57.4 Winter: 49.5


My 2006 SPM: Last tank 376.6 miles @38.21 pump (40.8 MFD) 7.17 cpm
winter mpg 49.64 summer mpg 53.41
lifetime: 42,563.5 miles 51.5 mpg pump (52.7 mpg MFD) 5.51 cpm

My 2007 Zenn total "fuel cost" $166.58 on "about" 9599.7 miles. 1.74 cents per mile (granted i plug in for free at work!!)

My Plate: DUALPWR (Dual Power)

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Old 11-04-2008, 02:44 PM   #10
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Default Re: MFD and Actual MPG way Off

Quote:
Originally Posted by DaveinOlyWA View Post
$5000: average monthly charge on the three cards we use
ZERO: average carry over balance
$860: cash back earned last year....should be slightly higher this year because of 3% cash back on all gas we buy.
Same for me more or less.
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