Real World MPG Numbers

shaweeeeeeeeet!!!!! next tank will be even more interesting.

 

This is not a full statistics, but it seems that the EPA numbers are quite conservative......

 

yes, that is what some reviewers have said as well.

 

Nice! Keep up the good work.

 

U started getting better gas mileage with the last half of tank, u were getting 62 something, so you actually got a lot more MPG the last half, more that 64.9, do you agree? OIC now, you were actually getting 69mpg the later day. How did you do that?
merged, though you quoted yourself

 

will be interesting how some of these two eco mileage reports come in. I was looking on web site today in Wilmington, NC today. They had 2, two eco cars in stock and didn't check to see how many of the other styles they had. Our weather here has been terrible today, 25 degree right now with 3 inches of ice on ground and more expected tomorrow. Our 2011 two is still going strong, 156k without any problems. This is the car we will use at end of year to sell or trade in on the eco probably. I wish I had held off buying the 2015 and went with 2016, but got a good deal. I just looked, they have 16 prius, 2016 in stock

 

I would say the car is "learning". As it learns, it gets better mileage.
I would also say the driver is "learning". As he learns, he is able to get better mileage.
Also, breakin will lower losses, so mileage will improve slightly.

And this is exactly what I would expect to happen.

 

i don't understand how cars 'learn'.

i don't think the driver is learning, this not being the first prius.

i don't think you can break a car in on half a tank of gas.

but what do i know.

 

The tires, at least, will certainly improve significantly in rolling resistance well beyond that point. Other mechanical bits, maybe.

 

Cars learn by storing the settings for fuel mixture etc. as they are driven. The computer can compute the setting "on the fly", but that takes time and some efficiency is lost due to that time. Once the car "learns" how the driver is using it, storing the settings, it can use the stored settings, which load almost instantly, thus improving efficiency vs time. Yes, the car comes with those settings already stored, but every engine is slightly different. The car will over-write the "factory settings" in that matrix with it's own calculated ones, which work better (usually). Actually, there are two matrixes, no wait, three, in the computer. But I digress. At any rate, the computer will use the computed setting (if available), and that results in higher efficiency.

Breakin slows as the car is driven. The biggest breakin effect happens right away. The effects lessen over time operated. So for the first 100 mi. or so you can really see the effect. Most owners are so busy learning where the controls are and watching how the car works, they don't notice the breakin effects. But you can sure see them in the numbers the GIV is storing in that display! "Getting better all the time" to quote the Beatles.

 

Reads like the prolog for the VW-gate tuning of the cheat-diesels. <GRINS>

Hummmmm, wonder what default software settings are in the latest 'Prius-killer', the IONIQ. <Uh Oh!>

Bob Wilson

 

what kind of driving? what mean MPH? i don't see it displayed (unlike gen 3).

 

krmcg...since everybody drives differently, what kind of numbers were you getting with your previous gen Prius? That probably will give us a better idea how much better the new one is over the old one mileage wise. Thanks!

 

Interesting stats, thanks for the post and the info!

 

Real World, to me, means ignoring the MDF and hand calculating.

Don't get me wrong.
64.9MPG over 650 miles is good stuff, but my G3 sometimes puts a thumb on the scale where mileage is concerned, which is why I learned to ignore the MDF numbers and hand calculate every time I fill up.
Since I always load about 10 gallons of fuel plus or minus a Slurpee's worth, the math is fairly easy.
The G4 seems to be handily beating the EPA estimates with early adopters....just like the G3 did when it first came out.
According to Fuelly, the G3 just about splits the uprights where EPA efficiency is concerned out in the real world and over the six years that G3's were made, which also matches my personal experience. I also noticed that my driving technique grew a little more slothful where fuel efficiency is concerned over time (2010 to present) and MY numbers slipped from about 60MPG tank-to-tank to low 50's over time.

I'm also wondering how G4's will fare is the annual battle with old man winter and differing fuel blends.

Right now gas prices are $1.39 in my neck if the woods.
Any way you measure it....they might trough out at about a buck again before the summer driving season, but before the G4 gives way to the next generation of Prius you can just about count on another period of high gas prices.

Even at $1.39.....the stuff is too expensive to waste!

Good Luck!

 

I believe the 2016 Prius mpg gauge is right on the money, maybe even more conservative than hand computed mpg numbers. This is from cleanmpg.com Wayne Gerdes observations....