Tblaney

Thanks for the reply on this.  It definitely helps getting other peoples perspective on there experiences.   

I am guessing we are at 80% as well, but will start to time it.  So I am timing correctly the engine is on when the Green EV light is off, is that correct?

No, we don't have the turbo.   We stayed away from the rx550 because of the gas milage.  That had a window sticker with MPG between 26 and 28.  

More info to come.  Thanks again for the help.

Our garage is heated.  So the car is at 65F.  the road to the highway is about 4 miles of 35 - 55 mph with 2 stop signs.  it's than 15 miles to town at 70 MPH.  One of these trips, the gas milage will be 27 MPG never higher.  

I agree it should be in the thirties, which is what the window sticker says.  I am wondering why have have never got over 28mpg.  It now has about 1,200 miles on it.  So it's being used.  

We have had a few tanks of gas now, and I haven't seen it get over 28 MPG.  I was expecting it to be in the mid to upper 30's. 

We just picked up a 24 RX 350h.  What gas mileage should we expect with 250 miles on the car?  Right now we are averaging 27.5 on the dash.  I was expecting more in the mid to upper 30's.  Does it get better as it engine break-in is complete?