Did anyone compare the noise of the electric motors between the gen 3 and gen 4 Prius? To my the gen 3 transaxle seems to create more electric motor "whine" when accelerating gently than the gen 4. I am not talking about full throttle max rpm accelerating but normal accelerating where you keep the gauge at the top end of the ECO area.
The 4th gen transaxle is a complete redesign; wouldn’t be surprised. 3rd gen has everything along a single shaft with all the gears and goodies. 4th gen has two side-by-side shafts.
Yes, the Gen 4 is quieter in that regard, possibly because of that redesign Mendel mentioned. Also, MG2 is smaller and has less torque but spins faster in the Gen 4. That could be a factor.
Thanks for the info. The higher rpm of the electric motors cause it to make a higher pitched noise which is easier to isolate I guess.
