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Toyota Prius MPG-Real World Numbers

767 messages,  Last post on Sep 28, 2009 at 9:21 AM

You are in the Toyota Prius Forum. Your Host is pf_flyer

What is this discussion about? Toyota Prius, Hybrid Cars, Fuel Efficiency (MPG), Sedan


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#554 of 767
Re: FE Report [carbot] by cheryl06prius
May 04, 2008 (4:45 am)
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Replying to: carbot (May 03, 2008 9:46 am)

One reason for continuing to pump after the automatic shut off is that you can ordinarily pump another l to l.5 gallons. In a pinch that is another 50-75 miles you can drive w/o refueling.
I'm not concerned about the mileage for each tankful because I realize the bladder issue distorts the calculation. My main concern is knowing the same exact level for each fill up so that after l0,20 or more you can make an accurate calculation.
 
I'd rather take another 2-3 minutes flling the tank and having the extended driving range in addition to the "exact level" constant.
#555 of 767
Re: FE Report [cheryl06prius] by coupedncal
May 04, 2008 (12:24 pm)
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Replying to: cheryl06prius (May 04, 2008 4:45 am)

I am not sure what reasons you had to buy your Prius, but if it was to help the environment, please consider this action is taking significant savings away from your motivation. There is a reason there is a shut off mechanism in place.
 
Of course, no offense is intended and none should be taken. This is just an advice.
#556 of 767
Re: MPG question and Consumption Screen [rolin] by mlaurenc
May 04, 2008 (3:33 pm)
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Replying to: rolin (Apr 27, 2008 3:48 am)

Give your new car some time to "break in" - they require 6 months at least.
 
Lately (over last 1500 KM ) my 2006 Prius has achieved 54.5 mpg with once weekly driving between collingwood and niagara (140 miles)
 
Breakdown:
60% country roads (50 mi/hr) 40% 6 lane highways (60 mi/hr)
 
Also suggest you might want to look at the folllowing guide to how to drive a Prius:
 
http://www.hybridcars.com/gas-saving-tips/maximizing-mileage-toyota-prius.html
 
Also, I've learned that if the tank is totally filled (careful as it can shoot out if you don't stop as soon as you begin to hear the "gurgling") I get 120 miles before the first indicator bar disappears.
 
Mike
#557 of 767
Re: MPG question and Consumption Screen [mlaurenc] by rolin
May 04, 2008 (4:41 pm)
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Replying to: mlaurenc (May 04, 2008 3:33 pm)

Many thanks! I am starting to "relax" about this..
 
Linda
#558 of 767
Fuel Economy issues. by kdhspyder
May 04, 2008 (10:09 pm)
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A number of points were raised above. Oh, I've been involved with selling them since they first arrived in 2000. My own is a 2005 with 75000 mi now.
 
First about filling the tank. Go to Priuschat.com and search for the sticky on 'topping off'. Don't. You risk a whole lot of trouble. Essentially when the pump shuts off just end it right there. Don't worry about individual tankfuls. It's of no issue.
 
I liken this to when I used to tell my wife that by the time the kids were ready for college none would suck their thumbs and they'd all be housebroken. It's fun to see how you're doing tank by tank but look at it in the long run. As one noted above, you will average 48 mpg for the life of your vehicle. There are tens of thousands of Prius drivers doing just that day after day after day.
 
Don't worry about the individual tank fillings. Just use a spreadsheet or use the database at GreenHybrid.com and enter your miles driven and gallons pumped and you'll have the best and most accurate summary. The MFD display is a good 'indicator' that;s all. In the end after owning the vehicle for 8 years and driving 135000 miles if you added up all the fuel you had used you'd come to this value......48 mpg!
#559 of 767
Re: 75 MPG ?? downhill for sure... [v7sport73] by kdhspyder
May 04, 2008 (10:13 pm)
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Replying to: v7sport73 (Apr 26, 2008 10:59 am)

In your manual.... the breakin period is 600 mi. But you don't have to do anything special during that time. Just don't tow a boat. At 700 mi you're done already.
 
There are two other 'break in' periods where you'll find that your engine is more efficient, one at 5K and another at 10K. Both are very small differences.
#560 of 767
Re: MPG question and Consumption Screen [katerhiner] by kdhspyder
May 04, 2008 (10:19 pm)
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Replying to: katerhiner (May 02, 2008 6:56 am)

If you want a longterm record of your particular Fuel Economy save the receipts and mark the gallons pumped and miles driven since the last fillup. Then enter them in the GreenHybrid.com database. There are nearly 1600 Prius owners tracking their vehicles.
 
Don't worry about the FE. In the end it will be 48 mpg...with one caveat. If you only use the vehicle for short trips of 15 min or less then you will lose about 10% from the 'norm'. This is true for all vehicles on the road. It's just more obvious in a Prius.
#561 of 767
Re: FE Report [johndjr] by prius2007
May 05, 2008 (8:54 am)
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Replying to: johndjr (May 02, 2008 5:52 pm)

Just completed one year of ownership of my 2007 Prius and I'm very happy with it. I log each tank data/performance in a spreadsheet and my first year MPG = 56.8 (US gallons). Since the 5000 mile break-in period MPG = 58.6. Had several 60+ tanks highest being 64.1 and so far this spring all my tanks are 60+. It is getting better and better - easily exceeding EPA numbers. More than 50% of my drive is on the HWY.
#562 of 767
Re: Fuel Economy issues. [kdhspyder] by cheryl06prius
May 05, 2008 (10:05 am)
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Replying to: kdhspyder (May 04, 2008 10:09 pm)

Some Prius owners are just obssessive-compulsive when it comes to stats.
 
Obviously you are very knowledgeable on Prius issues. Just two questions:
a) assuming no gas spills, what are the adverse results of "topping" the tank, that is the extra 1-1.5 gallons after the shutoff engages?
b)is the trip fuel gauge for the Prius inherently flawed, or are the discrepancies due to bladder issues, i.e. an elapsed reading of 57MPG,manual calculation of 50MPG?
#563 of 767
Re: Fuel Economy issues. [cheryl06prius] by rolin
May 05, 2008 (10:28 am)
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Replying to: cheryl06prius (May 05, 2008 10:05 am)

Great questions. I await responses as well.
 
Thanks

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