Lifetime MPG

skiguy · 06-06-2004, 02:12 AM

Hello,
I always see people reference the lifetime MPG, im wondering where I go on the Prius to access this or if this is a manual calculation.
Thanks
Paul

jamarimutt · 06-06-2004, 07:00 AM

This is a manual calculation derived from keeping records of the miles per gallon obtained for all tank fill-ups, either calculated by the car or in the traditional way by the owner. The Prius has an board computer which calculates mpgs based on the amoung of gas injected into cylinder 1 times 4. This is accurate enough for me, so I don't bother doing the old calculations. I consistently get an average of 51 mpgs.

daniel · 06-06-2004, 09:39 AM

Averaging your individual tank mpg readings is accurate only if you factor in the distance driven on each tankful.

The only way to know your lifetime mpg on the Prius is to record the amount of gas pumped every time you fill up, and keep a running total, and divide that into your total miles driven. The figure will be only as accurate as the gas pumps and your odometer, and will be inaccurate for the first few tanksful as the tank may not be filled to exactly the same level each time.

Some cars offer a readout of lifetime mpg. The Prius does not.

skiguy · 06-06-2004, 01:18 PM

Thank you for that explantion. Maybe i will start a liftime MPG starting now lol. Still under 1000 miles.

06-06-2004, 02:12 AM	#1
skiguy Join Date: May 2004 Posts: 7 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Lifetime MPG Hello, I always see people reference the lifetime MPG, im wondering where I go on the Prius to access this or if this is a manual calculation. Thanks Paul

06-06-2004, 09:39 AM	#3
daniel Cat Lovers Against the Bomb Join Date: Feb 2004 Location: Spokane, WA Posts: 8,592 My Car: 2004 Prius Package: #6 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Averaging your individual tank mpg readings is accurate only if you factor in the distance driven on each tankful. The only way to know your lifetime mpg on the Prius is to record the amount of gas pumped every time you fill up, and keep a running total, and divide that into your total miles driven. The figure will be only as accurate as the gas pumps and your odometer, and will be inaccurate for the first few tanksful as the tank may not be filled to exactly the same level each time. Some cars offer a readout of lifetime mpg. The Prius does not. __________________ Daniel ---------------------- Primary car: Zap Xebra SD: 100% electric car. 1.9 cents per mile, using electrons generated from water power. (The Prius is my gas guzzler, used when I have to travel farther than 35 miles in a day.) "If voting changed anything, they'd make it illegal." -- Emma Goldman "Anyone who has ever looked into the glazed eyes of a soldier dying on the battlefield will think long and hard before starting a war." -- Otto von Bismarck

06-06-2004, 01:18 PM	#4
skiguy Join Date: May 2004 Posts: 7 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	thanks Thank you for that explantion. Maybe i will start a liftime MPG starting now lol. Still under 1000 miles.

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06-06-2004, 07:00 AM	#2
jamarimutt Join Date: May 2004 Posts: 972 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	This is a manual calculation derived from keeping records of the miles per gallon obtained for all tank fill-ups, either calculated by the car or in the traditional way by the owner. The Prius has an board computer which calculates mpgs based on the amoung of gas injected into cylinder 1 times 4. This is accurate enough for me, so I don't bother doing the old calculations. I consistently get an average of 51 mpgs.