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Toyota Prius MPG-Real World Numbers

768 messages,  Last post on Dec 04, 2009 at 6:12 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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#716 of 768
Re: Questions, questions and even more questions? [dewey] by john1701a
Aug 18, 2009 (10:02 pm)
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Replying to: dewey (Aug 18, 2009 6:22 am)

>> use "B" going downhills
 
That harms MPG. By engaging engine-braking, you are taking away from the regenerating opportunities. Basically, the only time you should ever use it is when driving down a mountain and you prevent the brakes from overheating.
 
>>accelerate slowly
 
That can be counter-productive. If you aren't allowing the Eco-Meter to rise into the RED zone, you are probably causing lower MPG when accelerating. Seeing the power rise to that level isn't bad for efficiency. The point of the meter is to allow you to KEEP IT BRIEF.
.
#717 of 768
Re: Questions, questions and even more questions? [john1701a] by wvgasguy
Aug 19, 2009 (4:26 am)
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Replying to: john1701a (Aug 18, 2009 10:02 pm)

>> use "B" going downhills
  
That harms MPG. By engaging engine-braking, you are taking away from the regenerating opportunities. Basically, the only time you should ever use it is when driving down a mountain and you prevent the brakes from overheating.

 
Not exactly how it harms MPG unless you want to gain speed so that you can go further once you start uphill before you need to apply the throttle.
 
I never used it but after reading comments over on PC I tried it. It appears that in "B" mode you do get regeneration (I don't think my TCH reacted like that). You also get regeneration from the cruise control which does a real good job of holding speed down steep grades, unlike my TCH which would cause me to use my brakes to stay reasonably close to the speed limit.
#718 of 768
Answers! by dewey
Aug 19, 2009 (1:05 pm)
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Thanks for the responses.
 
I will definitely start driving the car more normally. I hardly ever hit the PWR red zone on my eco-meter and that can explain why.
 
THe "B" mode seems to work for me as long as there is no uphill after a downhill otherwise using "B mode" slows down the car to the point where I have to re-accelerate in order to climb another slope.
#719 of 768
I have to smile... by scottc3
Aug 19, 2009 (4:29 pm)
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I bought my 08 Prius in Dec of 07 - love it. I monitored the gas mileage daily for about 6 months- and I was saving lots of money on gas - as I should, over my old car, which got 20 mpg. I read this forum daily to see what others were getting.. some claimed 60mpg (+/-).. others said they could only get 40 mpg. The guys claiming 60 were traveling 50mph on the freeway, going downhill, coasting up to every red stop light - even if they caused a traffic jam behind them.. accelerating so slowly people would pass honking the horn.. look, we all have the same car. We are all going to get about the same mileage - given the same driving conditions. My sister got a Prius the same time I did - she's in Torrance - up and down hills all day - she gets about 35-40.. and so would anyone else driving on the same roads she does. Don't worry about trying to meet or beat other 'claims'.. you have a great car.. enjoy it.
 
sc
#720 of 768
Re: I have to smile... [scottc3] by wvgasguy
Aug 22, 2009 (3:45 am)
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Replying to: scottc3 (Aug 19, 2009 4:29 pm)

....and so would anyone else driving on the same roads she does. Don't worry about trying to meet or beat other 'claims'.. you have a great car.. enjoy it.
 
I don't hypermile but I do use a few of the tricks learned to maximize milage while driving "normal". I consistantly beat my wife's milage by about 10% (which is 4 to 5 mpg). However the hypermilers will beat me by 15 to 20%. I don't want to work at it that hard, but there are some gains to be had by learning how the system works. Then again, just driving "normal" will still give good results as compared to what you previously drove.
#721 of 768
Re: I have to smile... [scottc3] by prius2007
Aug 22, 2009 (4:21 am)
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Replying to: scottc3 (Aug 19, 2009 4:29 pm)

                                        US MPG L/100km imp gal
YEAR 1 MPG = 56.8 4.14 69.0
YEAR 2 MPG = 62.8 3.75 76.3
YEAR 3 MPG = 66.3 3.55 80.5
LMPG = 60.9 3.86 74.0
My best tank to-date 70.1 US MPG have pictures and had 2 tanks over 69. I'm on a string of 24 tanks of >60 US MPG with the first one being Feb'09 middle of the coldest part of Canadian winter and I don't use an EBH.
Total miles driven 40,300 ...and if it was all going downhill (per scottc3) I would be where now??? Redicoulous!!!
 
dewey, perhaps you're not doing anything wrong. You did demonstrate you can get great mileage on one trip - would like more details about that trip. Also asked you before for your driving profile. Distance / time travelled to work ...etc. Here is what I believe based on the limited info you provided so far:
From another post I believe you leave somewhere around Eglinton and Avenue Rd area. You also said you drive downtown. If that is the case that is probably too short of a drive to achieve great MPG. What is the distance and time it takes you to make this daily trip (home - work)? How many 5 minute bars you have on your screen at the end of the trip.
 
Are you interested in meeting and I can go over a few things with you and follow it with a test drive?
 
Sincerely,
Gabe
P.S. I can show you and have you verify my MPG log sheets for scottc3 who implies that people like me are "liars"
#722 of 768
Re: I have to smile... [scottc3] by vanderhorstg
Aug 23, 2009 (7:54 am)
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Replying to: scottc3 (Aug 19, 2009 4:29 pm)

I Agree! I have an 06 Prius, and I LOVE it - more for the statement on sustainability, lower emissions, etc. The MPG is just an added perk! When driving a Prius, people look at you with respect and envy; enjoy it and encourage them to get onboard!!!
#723 of 768
'10 Prius IV Eco Mode by justlooking9
Aug 24, 2009 (11:47 am)
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I'm getting 48MPG driving normally, mixed hi-way/city driving.
#724 of 768
'10 Prius IV normal mode by justlooking9
Aug 31, 2009 (2:39 am)
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I'm getting 52MPG driving normally, which was better mileage than driving "gently" in eco mode where I got 48MPG.
#725 of 768
Re: '10 Prius IV normal mode [justlooking9] by vanderhorstg
Aug 31, 2009 (7:07 am)
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Replying to: justlooking9 (Aug 31, 2009 2:39 am)

What is the "Eco Mode" that you are referring to? Is this a feature newer than the 2006 model?

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