Half a tank and doing 70.2 mpg

Drink the kool aid and smile. Don't mean to rain on your parade but c'mon man?! My dashboard has read 70.9, 62.9, etc. etc and I'm always putting in more gas at 440 mile mark.

 

I'm sure 70.2MPG on the display is really in the mid to high 60's if you calculate it out, but either way that's quite impressive. The best tank I had on my 2010 Prius was 592 miles and 62.0MPG calculated. That was more than a year ago and I don't recall what the screen said, but it was probably around to 65 or 66MPG. The Prius can do great in certain conditions and I'm sure the warm weather helps too... although you're not going to be seeing me riding around with no AC on a 100 degree day

Good luck with the rest of your tank

 

No A/C during the day? You are a trooper, all in the qwest for a higher mileage.

 

Great tank so far! Keep it up! It is quite the accomplishment to have a 70 mpg tank (displayed). Make sure you post up on the top 20 MPG thread (and the 700 mile tank thread if you get that far) when you are done. Looking forward to a new member to the club!

 

For high fuel efficiency, raise your tire pressure a bit higher to 40-42 psi front/38-40 psi rear. Try to keep your highway speed between 53-58 mph. As long as you can get 65 mpg computed at the fillup (68 mpg estimated on the MFD) you should be able to get atleast 700 miles per tank. I was been able to do 71 mpg (calculated at the pump) over 800 miles on a tank. 700 miles per tank is doable as long as the driving temperature is above 50 Fahrenheit. When the driving temperature drops below 32 Fahrenheit (freezing) getting over 55 mpg/650 miles per tank is more problematic and often is a challenging situation.

 

Very nice! I get quite a kick out of 70+ mpg tanks too

I find that 45 minute drives with moderate AC use do not take much of a toll on my fuel economy -- somewhere around 1 - 2%. Most of the AC use is offset by better aerodynamics from closed windows. The trick is to park in the shade so that a large heat load does not have to be removed. If I had to make my own shade, I would consider buying a cloth whole car cover. An annoyance to place and remove, but at least for me much better than sitting in a sweltering car.

One other thing to keep in mind: traction batteries have shortened lives when subjected to prolonged heat stress. Your battery will not be bothered by one tank of working at 100F all the time, but that is not a lifestyle habit for long battery life. As it is, AZ is hard on batteries. Personally, I try to temper my desire for ultra-high MPG with habits that will hopefully give me a useful traction battery life closer to 300k rather than 150k miles.

 

You're doing something wrong.

To the OP...great job and keep up the great work. Will be nice to have you part of the 700 club!

 

Ouch. Are you the guy who is going to parachute from space ?

 

I found a picture of Mozdzen on the internet.....I think it answers a lot of questions.


Huzzzzzz......
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You may want to be keeping an eye on the temp of your battery pack. They may be heating up more than they probably should.

 

Scan gauge or torque. I have trouble believing that the battery fan is not coming on when it is 100 degrees outside and you have the windows rolled up.

 

When the fan comes on, does it sound like "white noise" or noise as if a door or window wasn't fully closed?

 

I have found that (assuming you had a "normal" fillup on your previus fillup) that you can go 10x the displayed MPG reading without too much worry. (it is more accurate than the Distance to Empty (DTE) reading) assuming you don't suddenly decide to drive like a maniac near the end of the tank.

So, I'd say you would easily get 700 miles on this tank at your current rate, I wouldn't push it much past 725 - 750 miles.

 

I use 11 times the display reading as a maximum range. That leaves about 1/3rd of a gallon. As Codyroo says, this assumes the tank started out full with 11.9 gallons in it.

 

Sounds like you may be relying on the 'distance to empty' alarm from the car. When that alarm sounds, you have 3 gallons in the tank, and I'd expect that you can only put about 9 gallons back in.