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Increased Fuel Efficiency by 10%

Discussion in 'Gen II Prius Fuel Economy' started by SWprius08, Apr 26, 2011.

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  1. SWprius08

    SWprius08 SoCalprius

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    I am a prius driver since 2007 and have drove about 43 K miles. I came to know about this website recently. I was getting 45 to 47 average MPG and was satisfied compared to 25 to 30 on other non-hybrid cars. Here I found out that others are getting MPG upto 55 and 60. I searched some threads and found few simple changes in my driving style and got the FE increased by 10%. Now I look at an average of 51 to 53 MPG. Thanx Oldwolf and mikewithaprius. I used to drive prius like a conventional car. Below are the changes I made

    1) Upto 40 MPH, always try to keep instantaneous MPG within 85% of intantaneous MPH.

    2) Glide as much as possible

    3) Super Highway mode when possible.

    I am more than satisfied now. But will keep trying to get more and more MPG without sacrificing time.

    Toyota delears should make Prius Customers aware of this website when they buy. If you sell your prius I recommend letting your buyers know about this website as well.

    This is superhit. Thank You all.
    2 people like this.
  2. seilerts

    seilerts Battery Curmudgeon

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    PriusChat is a wonderful source of information, covering what services you don't need, how much things cost, what you as a customer should expect to pay, help with troubleshooting problems, do it yourself advice, and translation of service adviser scare tactics. This site has save many people thousands of dollars in unnecessary repairs, declined services, and cheaper fixes. Most dealers probably don't like it.
    1 person likes this.
  3. TRStahl

    TRStahl New Member

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    What is Super Highway Mode?
  4. SWprius08

    SWprius08 SoCalprius

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    Technique #3 - Super Highway Mode

    What it is

    Another dramatically named technique you can use in certain situations at higher speeds. The engine and battery pack go back and forth with their energy use - arrows will be all over the place on your screen, so don't even worry about them. You can use SHM to maintain speed on a flat surface, or else accelerate very slowly on a downhill.

    How to use it

    The best place to test it out is on a flat piece of highway once you're already going your desired speed. Simply let up considerably on the accelerator, but not enough to enter into regen or warp stealth. At about 55 mph, it should be very easy to get the instant mpg at about 75 mpg. This is SHM. You'll be able to just about hold your speed if on flat ground at this very low state of fuel consumption. Even 60 mpg is a decent mileage to shoot for. You'll find that once you try to milk it and go higher than 75 mpg, toward 80, and eventually 99.9+ mpg, you'll be loafing, and will lose speed very easily. Maintain that momentum! It's better than slowing down too much and having to accelerate again later.

    If you find that you're trying SHM on a slight downhill, and are holding speed just fine with instant mpg at 80 or higher, just switch to warp stealth, it's much more efficient than having the engine loaf in SHM.

    Mileage

    You'll have a hard time quantifying any increases using this, and again, using it too much can cause you to slow and finding yourself needing to accelerate again, wasting energy. There are some expert Prius drivers who never use this mode, and others who use it extensively on the highway. It's more that this mode will teach you to use the minimum amount of gas to stay at your desired speed. You'll feel as though you're already doing this, getting 50 mpg over a distance, but if you let up, you'll likely find you can maintain your speed getting 60-70 mpg.

    Source: Mike with a Prius: Prius-ing for Dummies - beginner Prius mileage tips

    Thanks to: mikewithaprius
  5. Oldwolf

    Oldwolf Prius Enthusiast

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    Hi. Its neat you researched your issue and now have positive results for it!
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