66.1 Mpg !! See It To Believe It !!

Congratulations on the great milage, 08Prius!

 

Let's hear those tips, I'm dying.
(Great mileage)

ZC1

 

congrats but honestly i don't think it's anything to be excited about unless you can get a full tank at 66.1 mpg, as i'm sure several priuschatters can get that for a bit until they turn off the car. so come back and show us what you got after your done with your tank.

 

Do you mean that you only fill to half a tank, or do you mean that when you get to half a tank you fill up? Congratulations on the mpgs.

 

Good effort.
I think what saechaka is saying is it will be harder to get this mileage on a full tank because it uses more fuel to warm the engine from cold starts. When you recorded this trip the engine was already hot.
All that aside you have done a very good job, I think the most important tip is once the wheels start to turn keep them turning, that is do what ever you need to do to keep moving including lifting that right foot early and avoiding any braking.

Something else I do is if I find my speed going a little high down a hill on the highway at highway speeds, I don't just lift my foot and coast down to speed I try to keep the engine running at a low consumption like 1.5L/100km and slow down over a greater distance. This avoids conversion losses from charging and recovering energy from the battery. Also speed up a little before a hill and allow speed to drop a little as you climb. I only do this if no one is watching.

 

A half full tank saves about 30 lbs of weight, less than 1%. Is it really worth the bother?

Don't despair when you MPGs drop below 50. Unusually good MPGs are common immediately after a fillup because the car is already warmed up.

 

Certainly a significant amount of weight can have an adverse effect on fuel economy, but the impact of 5-6 gallons of fuel is negligible. You might end up burning more fuel than it saves by having to stop more often to refuel.

 

Here is a pic. of my best tank so far just took this pic this morning It only held 10.5 gallons..I love this car!!!! Congrats on your good MPG try and go a whole tank and see what kind of MPG's and how many miles but dont run out of gas... I run 44(front) and 42(rear) and run between 62-65 MPH on Interstate..

 

Sandman, that's phenominal. For my 335 mile trip to San Diego I usually get 55mpg when I hit LA and then something happens between LA and San Diego because I drop to 45mpg.

 

Now, you gotta do it over an entire tank, then post it in the stickey, "I beat the EPA".

And clean your MFD for God sake!

 

I cant wait until I have a mpg over 50!! Ill be happy..

 

Congrats on the great MPG.

The best I've been able to do is 52 so far. I've only had it for a month and everyday I'm changing the way I drive.

I wish I didn't have to go up so many hills on my drive.

 

Your excitement is terrific -- The real trick will be to maintain that high MPG over the course of about 3/4 tank (when you'd be re-fueling)

In the warm weather, my last 2 tanks have given me about 63 MPG -- and just as you're doing, no mods, just technique. It's boggling, isn't it!
:bounce:ound:

 

For most of their length in this area (Utah & Nevada) the speed limit on the Interstate is 75 mph. Running 65 mph or less could get you run over (or run off the road) by semis. When I have the time and am interested in improving mileage, I take secondary highways with speed limits of 60 or 65 mph for that reason.

 

I spent several hours last Sunday telling passersby at an Earth-fest
sort of thing about the "crossover point" for the car -- 62 at 62,
where the MPH meets the MPG. Go faster, get less MPG, go slower,
get more. It just seems to be about what the car is capable
of steady-state on the highway. That's generally by locking
your foot in positions that run the engine in efficient, high-
load states and avoiding the cruise-control, which is too aggressive
or allows poor-efficiency states. It's okay to let a little
speed bleed off on the uphills and get it back on the downs,
too, within reason.
.
_H*