Typically it is in the 1500-1800 at startup the lowest about 900 and around 4000 on hard acceleration in the low speed range (20mph) I didn't spend much time on the highway during my test drive but somewhere in the 3000rpm at 60mph I think because it really doesn't have a lot of gearing and the electric motor is limited in its rpm upper limit. If I get to go for another ride with the SG connected I will make a note of it.
based off the 1st gen prius in japan (97-00)... boy i still crave for that model (classic prius 01-03 that is)... pulsing and gliding on that simluator nets me a 74.5 mpg trip. If anyone can beat my score feel free! Oh and my battery charge is 50% by the way, didn't have to force charge once! and its over 3.9 miles
If your reading this, then good for you, your saving some gas because your here.