Eco v Power mode

From my experience having put 11,000+ miles on my Prius. Eco will give you the best mileage...it is only a minor difference........but it's there.

Eco causes you to move the fuel pedal more then Power does, Power will give you the top performance of the ICE & EV combined. In performance I talking about more speed & power to the wheels.

 

If you drive very aggressively they will be the same. For everyone else Eco will give better fuel economy, for a number of reasons. Have a search and you'll find lots of threads about it.

 

More or less true. Virtually all of what they do is just recalibrate pedal response. ECO is trivial. I drive in neither one and "normal" FWIW.

 

I gave a somewhat long-winded response to this question just the other day, if it helps any.

 

Try the following as a guide;

Eco - town/city
Normal - Open road/Highway
Power - Overtaking or fun


Eco assists you to be more economical, Power assists you past that slow car.

 

I usually stay in normal mode myself. There are slight differences with each mode: most of it is the accelerator, but there is also a difference with A/C. I think the accelerator differences between Eco and Power are more important when you're getting used to the car. By now I've gotten used to mine so that I can just "gun it" whenever I need (no matter what mode). As for MPG, I think it's more about your own habbits then what mode the car is in (practicing "hypermiling" will give you the best mileage).

 

I might recommend:

Eco: When you need fine control at low gas pedal depression. Stop & go; Pulse & glide.
Power: When you need fine control at high gas pedal depression, or max climate control.
Normal: if you want consistent gas pedal response, and never change modes.

Alternatively,
Eco: When you want to believe you are being environmentally friendly.
Power: When you want to believe you are being sporty, powerful, macho.
Normal: ...

 

I seldom drive in anything but ECO. I notice 3 things, gradual, linear starts make starting on slippery roads much easier, the A/C seems less powerful in summer and Cruise Control doesn't make the ICE rev up on hills ( I actually slow down a few miles per hour on uphills). I have had nearly 2 years and 25000 miles. My total average is 54.1 mpg (calculated) and when the weather is really warm I can push to nearly 70 mpg for a tank of mostly city driving. I'll stick with ECO rather than the risky hypermiling techniques.
Needless to say I'm very pleased with my Prius.

 

Greetings and Welcome Aboard!
:welcome:

A previous poster gave you all the high points, and a link to get there. Nothing to add to that except to say that I started off in ECO mode and got used to the throttle in that mode. The difference is indeed minor---but I'm used to the throttle response (or lack thereof) in that mode.

If you drive like a teenager---you're only gonna get about 45MPG---but you'll still be getting 45, as opposed to like....15 in a truck. (Been there....done that! )

Good Luck!

 

Not really true IMHO, I noticed that when driving with the HSI bar just below the "O" of ECO, when I run in ECO the ICE seems to provide around 80nm/ft of torque while it provides only 60nm/ft in Power mode, so I'm assuming that Power also changes the amount of torque provided by the electric motors.
This would make sense as the electric motors can provide a lot of torque very quickly which is what you want the Power mode to offer.
The difference in MPG of doing this is probably not much but there must be a difference in favor of the ECO mode I guess.

 

But you even say "probably not much". These threads pop up all the time, I mean like every week, and I've not seen a convincing graph, only many many anecdotes talking about it, but nothing that truly compares ECO vs PWR vs NORMAL in the same conditions over enough miles to be statistically meaningful.

 

It could be that the Prius also remaps the HSI bar in ECO vs PWR.

It definitely remaps the bar for EV.