Anybody else actually tracking their day to day driving?

I bought my Prius C2 in July 2013 and have been tracking my daily fuel mileage (as shown on MFD) since September. I also record ambient temperature and will correlate with MPG when I have one year's worth of data. The severe winter had a big effect on fuel consumption. So far, my overall mileage is 54.1 MPG over 4099 miles.

 

I bought my Prius C2 in July 2013 and have been tracking my daily fuel mileage (as shown on MFD) since September. I also record ambient temperature and will correlate with MPG when I have one year's worth of data. The severe winter had a big effect on fuel consumption. So far, my overall mileage is 54.1 MPG over 4099 miles.

 

Try:

• cruise control
• routes under 42 mph
• use "N" when coasting

Still using these since 2005,
Bob Wilson

 

I wasn't sure how involved I would become in tracking/improving mileage. As it turns out, after one week I'm not even reading the trip mileage anymore.

I'll probably track my mileage for a couple more fillups, then every once in a while after that.

 

I've read that using N to coast could be bad as it could allow some stuff to rotate faster than they should.

I've been using fuelly to track fillups. have not gotten into the daily tracking, doub't I'll get into that... but as the weather has warmed up... I have noticed quite an increase in MPG. not sure if its just the weather, or if they have stopped selling the "winter gas"

 

I've been tracking my daily driving data since 2009. So, I have both a collection for my 2010 Prius and my 2012 Prius PHV. It's quite interesting to watch the ups & down, especially with the conditions here in Minnesota. Here's the latest:





Check the spreadsheets on my website for detail.

 

I am on my 3rd tank of gas in my '14 Gen3. I use the "A" trip meter to track the tank mileage and the "B" trip meter to track my back and forth to work and am just mentally keeping track. I've already learned quite a bit about how tire pressure (my front left doesn't hold air at all for some reason), topography, and traffic affect my mileage.

Similar to you, I've found that the ability to "glide" is key. I sort of wish there was a function similar to cruise control that would allow you to hit a button and lock the pedal pressure instead of speed.

Speaking of gliding, you do not have to shift to N to "coast". When you remove your foot from the gas the car defaults to a state of capturing a small amount of energy to recharge the battery. If you apply very slight pedal pressure you can get to where the display bars are neither negative (charging) or positive (accelerating) and you are free coasting.

 

I wouldn't say it's nearly impossible; it just takes practice. I've had my '13 for two months, and its quite easy to make the bar on the HSI disappear completely now. Give it a few weeks to get used to it.

 

Making the HSI bar disappear is easy. It is the energy flow arrows on the other screen that are nearly impossible -- and at some speeds, apparently completely impossible -- to make vanish on the GenIII.

This is a change from the GenII, which lacked the former screen, but had an energy flow screen where the arrows could easily be made to disappear.

 

I watch to make sure the ICE is off, before putting it into neutral, otherwise I think it will continue to run the ICE and will not charge the traction batt.

 

I bought my 2010 III in June of 2009, I track mine by the tank because I think it's more accurate. I still divide miles/gallon and for 45,000 miles have found a 2.1 mpg difference between the display and my calculations. I've tested the speedo with GPS and find it is about 2 mph generous, I suspect the Odo is accurate because I've checked it with GPS, Scangauge II and know that it's suppossed to be accurate per DOT.
I have a 55.2 cumulative mpg for 45,000 miles (was 55.6 before winter tires and many below zero days), took a real hit this winter with extreme cold and replacing OEM Yokohamas with Bridgestone Blizzaks (Best mpg per tank, 44.3 during the winter) Put 16" wheels and Continental ContiPro Contact 205/55-16, (combo weighs 35.8# original Yokohamas and 15" factory wheels were 34#)tires on for summer a couple of days ago, will see.

 

FWIW- my current car has realtime TPMS data per wheel which has revealed that if I start off at 38 PSI cold (recommended tire pressure for the Volt) within a few miles of driving it's up to 41 PSI on all four tires.
So keep that in mind when over inflating your Prius tires to 43 PSI cold....

 

43 PSI is not over-inflating when the tire is rated for 44.

 

Agreed, my post was just to provide realtime results as to what happens to tire pressure once you start driving.
Tires inflated to 43 PSI cold would probably increase to 46 PSI once driven.