Stuck at 47.0 MPG

roryjr · 11-28-2007, 01:32 AM

After engine break in, we stayed around 48.5 to sometimes 50. It got stuck at 47.1 and about 2 weeks ago, went to 47.0. At the last oil change, I stressed my desire for 3.5 quarts and finally got it (I'm not always there as my wife drives it during the week). The 5 minute bars seem to be better, but the average does not change.

Is it a lifetime average? We are only at around 20k miles.

paprius4030 · 11-28-2007, 07:49 AM

WElcome to cold weather:-(

Proco · 11-28-2007, 08:23 AM

It sounds like it's your lifetime average that's being displayed. I don't know if the '07 MPG display automatically resets after a fill up or not, but it sounds like it doesn't. The next time you fill up you could try resetting the MPG on the consumption display.

firepa63 · 11-28-2007, 08:25 AM

The higher the mileage the higher or lower the MPG has to be to have an impact on the lifetime average. I reset my MPG at each fill-up and maintain my lifetime average on a spread sheet. I like to know what MPG I'm getting with each tank. If the mileage is out of the norm for a tank, I can start looking for reasons why, like low tire pressure, oil overfill, etc. I would never see that if I didn't do a reset.

Cold weather will definitely reduce your mileage.

**efusco** · 11-28-2007, 08:57 AM

If you want to see individual tank average you need to touch the 'reset' button after each fill up. On the '06+ Prius the display is an average since the last reset...or lifetime if you never hit reset. On the '04-'05 the MPG automatically reset at each fill up.
Personally I'd prefer if it showed both...lifetime and an auto reset tank average.

roryjr · 11-28-2007, 10:47 AM

Thanks guys. I'll try that reset thing.

a priori · 11-28-2007, 10:55 AM

<div class='quotetop'>QUOTE(Proco @ Nov 28 2007, 08:23 AM) [snapback]545145[/snapback]</div>

Quote:

. . .I don't know if the '07 MPG display automatically resets after a fill up or not, but it sounds like it doesn't. The next time you fill up you could try resetting the MPG on the consumption display.
[/b]

I believe my '07 resets after a fill up -- but only after having turned off the car. It has been some time now since I've encountered the issue, because I now leave it in Ready mode when filling the tank. In doing this I find that I have to manually reset or the MPG remains from the prior tank. I also save on some fuel, because the car doesn't force an ICE run as happens during a normal Start.

roryjr · 11-28-2007, 02:10 PM

That's it! We just leave it on when refueling. The motor is not running so we don't turn the car off.

Thanks.

jhall · 11-28-2007, 02:50 PM

<div class='quotetop'>QUOTE(roryjr @ Nov 28 2007, 11:10 AM) [snapback]545303[/snapback]</div>

Quote:

That's it! We just leave it on when refueling. The motor is not running so we don't turn the car off.

Thanks.
[/b]

Glad you got it working. I am not usually one to nag people, but I would recommend turning your car off while refueling. If your battery is low or your motor needs to warm up, the motor could start.

firepa63 · 11-28-2007, 03:29 PM

The 06 thru 08 resets the miles per tank, but not the MPG display. The 04 - 05 resets both the miles and MPG at each fill-up.

Turn your car OFF when fueling!!!

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11-28-2007, 01:32 AM	#1
roryjr Senior Member Join Date: Sep 2005 Location: Warrenton, NC Posts: 215 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	After engine break in, we stayed around 48.5 to sometimes 50. It got stuck at 47.1 and about 2 weeks ago, went to 47.0. At the last oil change, I stressed my desire for 3.5 quarts and finally got it (I'm not always there as my wife drives it during the week). The 5 minute bars seem to be better, but the average does not change. Is it a lifetime average? We are only at around 20k miles.

11-28-2007, 07:49 AM	#2
paprius4030 Senior Member Join Date: Aug 2004 Location: Pocono's, Pa. Posts: 1,079 My Car: 2008 Prius Package: #2 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 1	WElcome to cold weather:-(

11-28-2007, 08:23 AM	#3
Proco Senior Member Join Date: Jun 2006 Location: The Beautiful NJ Shore Posts: 1,962 My Car: 2006 Prius Package: #5 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 6	It sounds like it's your lifetime average that's being displayed. I don't know if the '07 MPG display automatically resets after a fill up or not, but it sounds like it doesn't. The next time you fill up you could try resetting the MPG on the consumption display.

11-28-2007, 08:25 AM	#4
firepa63 Senior Citizen Join Date: Jul 2005 Location: SE Pennsylvania Posts: 436 My Car: 2009 Prius Package: #5 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	The higher the mileage the higher or lower the MPG has to be to have an impact on the lifetime average. I reset my MPG at each fill-up and maintain my lifetime average on a spread sheet. I like to know what MPG I'm getting with each tank. If the mileage is out of the norm for a tank, I can start looking for reasons why, like low tire pressure, oil overfill, etc. I would never see that if I didn't do a reset. Cold weather will definitely reduce your mileage.

11-28-2007, 08:57 AM	#5
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 14,703 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 26	If you want to see individual tank average you need to touch the 'reset' button after each fill up. On the '06+ Prius the display is an average since the last reset...or lifetime if you never hit reset. On the '04-'05 the MPG automatically reset at each fill up. Personally I'd prefer if it showed both...lifetime and an auto reset tank average.

11-28-2007, 10:47 AM	#6
roryjr Senior Member Join Date: Sep 2005 Location: Warrenton, NC Posts: 215 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Thanks guys. I'll try that reset thing.

11-28-2007, 02:10 PM	#8
roryjr Senior Member Join Date: Sep 2005 Location: Warrenton, NC Posts: 215 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	That's it! We just leave it on when refueling. The motor is not running so we don't turn the car off. Thanks.

11-28-2007, 03:29 PM	#10
firepa63 Senior Citizen Join Date: Jul 2005 Location: SE Pennsylvania Posts: 436 My Car: 2009 Prius Package: #5 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	The 06 thru 08 resets the miles per tank, but not the MPG display. The 04 - 05 resets both the miles and MPG at each fill-up. Turn your car OFF when fueling!!!