I'm averaging between 55 to 63 MPG

No. And that's disgusting...

(5.0 liter/100 km translates to 47, fwiw)

 

I have been getting those kinds of numbers as well. As long as I keep my mph at 60 or less. I have a 45 kilometer test loop I use for testing new tires and got the best numbers ever with my 2014 on Ecopia ep- 20 rubber. 3 ltr per 100 kilometers. I forget what it was in mpg. H

 

CalculateMe.com - Convert Liters Per 100 Kilometers to Miles Per Gallon (US) says 78 mpg.

I started out with 58.8 for the first 60+ miles on the freeway, but then started messing with the nav system while parked with the engine/AC running because of the heat and the mileage dipped all the way to 41. It's moving back up (46 now) as I drive it again. Even so, the display indicates I should be able to go 600 miles total, so that should get me around 50 or so for this first tank. I'm hoping subsequent tanks will yield over 50, but a lot of the miles will be highway on our first trip late next month.

 

Last fill up with our 2010 Prius was 55 mpg calculated which is average for real world driving during the summer here in Northwestern Oregon. Its easy to be in the high 50's and low 60's when driving easy, 35-55 mph.

With 115,000 miles I am still getting the same mpg and battery energy as new. We also have a 2014 Chevy Volt. I am
looking forward to seeing what Toyota has in store for the next generation plug in Prius. If it has the range, mpg's, and looks,
it will probably replace our current 2010 Prius.

 

78 MPG(us)

Google Search has a brilliant calculator: '3 liters per 100 km in mpg'
Google seems to default to US units if there is ambiguity.

 

Yes it works out to 78.4 mpg US.

 

If you divide either mpg or liters/100 km into 235.2, the result is the conversion. Works both way. I worked this out some time back, don't ask me to explain it now though, lol. Give it a try.

 

Sure, but hope this helps am I going to remember 235.2 ?

In the interests of sanity, how about using 25x ?
As in 3L/100km = ~ 75 mpg (us)

 

FWIW, the conversion formula is:

mpg = (100 * lpg) / (kmpm * lp100km)

where
lpg = 3.785411784
kmpm = 1.609344

Therefore the formula breaks down as follows:
mpg = (100 * 3.785411784) / (1.609344 * lp100km)
mpg = 378.5411784 / 1.609344 * lp100km
lp100km * mpg = 378.5411784 / 1.609344
lp100km * mpg = 235.214583
mpg = 235.214583 / lp100km

Hence
235.2 / 3 = 78.404861 mpg

 

Yes.
Driving in the DC-Baltimore Area using a 2010 Toyota Prius III.
Refilled my tank yesterday.
61.999 mpg over 655.7 miles using 10.576 gallons of regular 87 octane E10 gasoline.
( equivalent to 3.79 liters per 100 kilometers)
But I have been hypermiling for the last four years now
my entire mileage log is online at fuelly (click below)
my fuel efficiency goes up and down over the four seasons

Walter

 

I also have recently got a 2014 Prius 4, and am getting 58.5 ave. for 2,100 miles on ''trip A'' on the dash--- 56.4 by calculator of gallons into miles. No complaints from me for 56.4,,,, miss the Lexus, not the gas stops though. We are going to Hilton Head, SC next week [ from MS ] so I will see what it will do on about a 1700-1800 round trip. Going to keep written records of mileage and gallons--- leave slam full and re-fill when arriving home.

 

Sure, stop bragging.

 

Let me suggest if you are using I-10, run about 2-3 hours on cruise control and 'take a break' at a gas station to top-off and record both tripmeter, odometer, and top-off tank. Using different speeds, you'll be able to chart mph vs MPG. Add to that, local wind speed and direction and temperature and you'll have everything to map out the trip. In an ideal world, you could start one segment with tires at max sidewall and then lower 5 psi to the door jam pressure.

In a good engineering study, you try to hold as many variables as possible constant and only change one between different test segments. The segments do not have to be identical duration, just long enough that start and stop are a minor fraction of each segment. Patience, don't get too wrapped around the axle if unexpected events like construction segments show up. Just document as much as can be done without 'going nuts' or being a road hazard.

GOOD LUCK!

Bob Wilson

 

I'm running around 55 mpg average. See my Fuelly badge.

 

I think to maintain high numbers like that, it takes, as much as skill, a specific type of driving, ie: longish trips with fully warmed engine, not too fast, pretty flat, few interruptions (traffic lights, etc).

For someone with a lot of short runs high numbers are not achievable. You do the best you can, and maybe come out ahead, at least in total gas consumed.

 

Arrived in Hilton Head Island, SC awhile ago from central Ms. With 2 adults [ girlfriend with me ] and 4 days of clothes for me [ 4 weeks worth for her,,, ha ha ] and running between 55--68 mph as conditions allowed, we averaged 59.4 mpg on the dash and 57.5 by calculator for the 600 mile trip... This is truly astonishing to me, the Prius 4 is about as comfortable as the RX350 was,, with more than twice the mpg...

E.T.A.,,, A/C was on all the way, for what that is worth ]

 

Did you use cruise control?

 

cruise was on SOMETIMES,,, when I got in those steep hiils in north Alabama, the engine was really straining on trying to maintain 62 mph on the upside. After about 2-3 of those, I knocked it off and picked up speed to around 70 to get up the upside... worked out better.