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Toyota Prius MPG-Real World Numbers



  • Hey everyone, I am considering purchasing the prius. A friend of mine who owned one warned me that on a hot day you basically have to choose, AC or power. His was a 2008 so I think the engine has been upgraded.
    He was also saying that when in heavy traffic (living in LA) the AC was sketchy as well.

    Anyone experience this?

    Thanks in advance.
  • Looks like my hilly 20mi commute, mostly highway I will be averaging around 80mpg on (20% of the time in ICE-kill).

    I had a recent 377mi segment with 95mpg (flatter, slower) (60% ICE-kill). These are consumption gauge numbers. Real world gas-fill numbers to follow soon.

    More here:

  • mbros2kmbros2k Posts: 71
    edited February 2010
    3000 miles on the odometer and mileage has increased slightly to 50/hw and 46/city. We drive about 70 mph on the highway and normally and defensively around town using no special techniques.
  • bobw3bobw3 Posts: 2,997
    if you calculate the price of a gallon of diesel vs 87octane here's the real MPG equivalent:
    gas $2.5/gal
    diesel $3.0/gal
    1000 miles driven@45mpg (diesel) = 22gal x $3 = $67
    1000 miles driven@37mpg (gas) = 27gal x $2.5 = $67

    So if I'm driving a car getting 37mpg, then a diesel would need to get 42mpg just to break even. And that's only if diesel is 50cents/gal more. I've seen it where diesel is almost $1 more than regular gas, which means this:

    1000 miles driven@45mpg (diesel) = 22gal x $3.5 = $77
    1000 miles driven@33.5mpg (gas) = 31gal x $2.5 = $77

    So if diesel was $1 more per gallon then getting 45mpg would equal 33.5mpg in a regular gas car.

    Based on this, if the Prius will give you 50mpg on the highway and the TDI 45mpg, it's really a comparison of 50mpg vs 33-37mpg of the TDI if you factor in the price of diesel.
  • dgr124dgr124 Posts: 9
    Got my Prius last summer. Easily could get avg. MPG in the 50s. Actually did a bit better on highway at 60-65 mph. Winter here in Wisconsin did bring the numbers down to 43-46. Recently on some warm days, mileage was up again. Currently reading 57.2 MPG. Although not sure how accurate that is. But it is still great. (On highway, held accelerator down, going 70. Kept foot on accelerator and hit brake. Car/engine immediately slowed down)
  • tlmiketlmike Posts: 5
    I got my 2010 Prius this past Sunday. I live in Southern Cal, so no cold weather issues. After 100 miles, stated mpg is surprisingly low at 43.5. Still, over 2.5 times better than the Acura TL I used to drive (got 16 mpg city). My commute is 100% city, flat roads, many stoplights. 7.5 miles to work. I tend to run the a/c all of the time, which has got to hit the numbers a bit. Still, I had hoped for the 51 mpg city that the sticker claimed (the sticker also hedged with a range of 43 - 57).
  • tlmiketlmike Posts: 5
    down to 42.7 mpg now. I hit the eco mode button, I'll see if that does anything to improve mileage.
  • lew74lew74 Posts: 8
    I live in Port Richey Florida and have an 05 prius. In summer without ac I get 55 to 56 mpg. in winter I get 52to 53 mpg. In summer with ac I get 52 to 53 mpg. However my normal drive each day is about 6 mile each way,if I make a lot of short trips to store etc mpg will drop 3 to 4 mpg.
  • stevegoldstevegold Posts: 185
    I'm finishing up my second set of OEM tires. I have a separate set of snow tires for winter use. What are the best tires for wear and comfortable ride?
  • mapleleavemapleleave Posts: 25
    Has anybody traded a Gen 2 prius to a Gen 3? I am wondering for the same commute and driver, what has been the improvement for 2010 Prius.

    My 07 touring with aftermarket B/S tire average 41mpg in summer time, and 43mpg if my top speed is limited to 66mph. In the winter, it is about 38mpg in Michigan.
  • mickeyrommickeyrom Posts: 936
    My gen II averages better than yours on the highway,sometimes as high as 60MPG,but typically around 50.In town,it's quite a bit less.Only 30 or so.
    EPA does rate the 2010 a bit higher,not sure if it's accurate.Probably not since my car is so far off the EPA ratings,especially in town.
    I am not complaining.I have never had a car that got close to 30 MPG in city until I bought this Prius.(or even 20)
  • mickeyrommickeyrom Posts: 936
    My last two fill ups on highway driving were 48.0 and 49.6.Seems OK to me,but driving around town is much lower.Speeds 55-70
  • john1701ajohn1701a Posts: 1,897
    edited May 2010
    >> Has anybody traded a Gen 2 prius to a Gen 3?

    Yup, all 3 actually...

    Gen 1 = 59,827 miles (3 years) averaged 45.4 mpg

    Gen 2 = 118,185 miles (5.5 years) averaged 47.7 mpg

    Gen 3 = 20,219 miles (1 year) averaged 50.1 mpg

  • agnostoagnosto Posts: 205
    edited June 2010
    First tank around 424 miles in ODO averaged 55.1 MPG when purchased new. Second tank about 196 miles so far, and 620 miles in ODO average is 68.0 MPG mixed driving, all I have to say is woOOOow, what an amazing vehicle the 2010 Toyota Prius is!!!! So very glad I got rid of my 2010 4Runner via trade-in...
  • tlmiketlmike Posts: 5
    edited June 2010
    3 months after purchase, my 2010, in eco mode, got 50.3 mpg after 408 miles, according to the prius computer. At the pump, mpg was actually 47.53. Almost all city driving.
  • mickeyrommickeyrom Posts: 936
    My 2007 has no "eco" mode ,but I am quite happy with the gas consumption, and a bit puzzled.My best mileage is on the highway and not city,which is at least 10 MPG less.I have seen it average over 60MPG on the computer,but that was only one time.I think it was a tail wind.Usually My computer average is 46 and at the pump, 43.That's close enough.
  • agnostoagnosto Posts: 205
    2nd tank and put 703.3 miles with 69.0MPG computer calculated and 1138 miles in ODO.............. woooooooooow what an amazing vehicle this 2010 Prius is... just wondering if anyone else has achieved close to this MPG.
  • mynomyno Posts: 1
    For Gen 3 Prius, urban driving conditions, this note describes a SIMPLE way to reliably exceed 65 mpg. This is a technique you can use from day 1 with your new Gen 3 Prius. Anyone can do it. There are other techniques which take awhile to learn, and can get better mileage, but this one is so simple it will be the one you use.

    (Note: I have the new low viscosity engine oil, and I declined the voluntary braking recall which would have reprogrammed the Prius' computer controls regarding regenerative braking. I have the inexpensive "Prius 1" model, which comes w/o any fancy gadgets like cruise control. I do not believe that any of these things substantially change my Prius's ability to get excellent gas mileage.)

    I live in Hawaii, on Oahu, where weather is not an issue. My usual driving does not involve climbing more than small hills, and the remainder is on essentially flat terrain. Just recently, however, I averaged over 65 mpg on a 100 mile loop that involved one sustained climb to an elevation of 1000', plus several minor hills.

    First, what I am NOT doing. Google "pulse-and-glide". That technique can reportedly obtain extremely high mileage from a Prius. The problem is that it is not useful in real life. On the roads I travel, a typical speed limit is 35 mph, and traffic typically goes along at 40-45 mph. If one were to drive using the P&G technique, accelerating quickly up to 45, then slowing to 30, then back up... it would drive the other drivers half crazy, and might even be hazardous to following traffic.

    So I have modified the P&G technique, relaxing its frantic acceleration and glide pattern to be almost unnoticeable by the other drivers. And I still get almost 70 mpg doing it. Here's how...

    Start by turning on Eco Mode. The panel should then constantly display the green ECO Mode light. Keep it that way.

    Change the display to "Hybrid System Indicator" mode. This shows the horizontal white bar that extends out to the right as you accelerate. The Prius manual calls this the Hybrid System Indicator. I call it the horizontal white bar.

    Now some background info. Above that horizontal bar is an oval that displays "ECO" when the white bar is not all the way to the right side. The ECO oval sits right above the half-way point on the white bar. Generally speaking, the Prius uses that half-way point to decide whether to turn on the engine. If you have plenty of battery charge, and you keep the white bar to the left of the half-way point, the engine stays off and the Prius uses its battery to propel the vehicle. You can tell by looking at the slightly-curved vertical instantaneous MPG display. If only the battery is in use, that instantaneous MPG value shoots all the way to the top, over 100 mpg. When the engine comes on, that vertical MPG bar comes down to half way, more or less, depending on the situation.

    My technique involves trying to keep the white bar in one of two general locations: to the left of the half-way point, or just below the right end of the ECO oval. These two conditions correspond to the "glide" (only using the battery, with the engine off), and the "pulse" (accelerating... albeit much more slowly than in the classical P&G technique, and NOT accelerating 10 or 15 mph).

    So, if there is plenty of battery charge, you can get 100+ mpg by keeping the bar to the left of half-way. But that will rapidly drain the battery. When the battery stack gets down to 2 bars, the engine will go on and the vertical instantaneous MPG bar will drop. When that happens, push down on the accelerator pedal just enough to position the white bar at the right end of the ECO oval. This will give you weak acceleration, not enough on level ground to quickly charge ahead by 10 or 15 mph as the P&G technique describes. Mostly it will allow you to maintain speed, slowly increasing speed, while also charging the battery pack. Then, a short while later (15-45 seconds, or hopefully longer if you are fortunate), as traffic dictates, you will probably need to take your foot off the gas, at which point the battery will have been charged a little bit, and the car will turn off the engine, switch back to battery only mode, and you're "gliding" at 100+ MPG.

    Because you only use a slight acceleration (putting the white bar to the right edge of the ECO oval), the speed of your vehicle won't change very much. It mostly maintains its speed (on level ground) while adding charge to the battery. This allows you to return to the "gliding" part of the cycle, where the white bar is to the left of the half-way point... the whole idea being to glide as much as possible.

    I have found that putting the white bar just to the right of the half-way point doesn't charge the battery quickly enough, and putting it farther right than the right edge of the ECO oval accelerates too quickly to maintain position in flowing traffic. Of course, some geography and traffic situations require actions that exceed these guidelines. But you will be able to judge for yourself. Hopefully, if enough people try this, we can get some more real world data to help fine-tune this technique.

    Caveat: in any case, you as driver are alone responsible for safe driving decisions, and you should never endanger yourself, your passengers, other drivers or pedestrians by attempting any maneuver, whether or not someone says it might be useful. Be especially wary of any task that distracts you from proper attention to your vehicle, the road, its conditions and surroundings. As others have noted, any P&G technique involves starting and stopping the engine on a regular and sustained basis. Although the Prius was purportedly designed to take this sort of activity, it might affect the general wear on the components of your vehicle, for which this author takes no responsibility. Please use your own judgment, and you assume all risks for adhering to or departing from the spirit or letter of these suggestions.
  • dgr124dgr124 Posts: 9
    I have had my 2010 Prius II for about a year. I mostly drive it in ECO mode, and usually get better mileage on the highway, about 57. ( The dash readout says 60, but actual is less). City is usually 50-53.) Winter here in Wisconsin is definitely less than that.) As recommended by others, trying to keep the "bar" to the left of the mid line and certainly to the left of the far right box is the best way to save gas.
  • agnostoagnosto Posts: 205
    Wooow, it is getting better and better, 4th tank of gas 739.9miles and 71.9MPG computer calculated for a total of over 2500 miles in ODO, what an amazing vehicle the 2010 Prius is!!!!
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