The older values are about 96.2 % for manual, 84.6 % for CVT, 86 % for automatic and 96 % for manual automatic transmissions.
You cannot answer this question without considering the driving cycle.
You are probably just looking for the efficiency input to output. In real driving it counts also the efficiency of the drive train and the shifting strategy. e´´ Be careful with these strict values.
I ask just due to driving cycles. Namely, it seems to me that the CVT low transmission efficiency annuls the benefits of optimizing the fuel consumption of the engine!
For Toyota-Prius that is generaly meant as the best CVT transmisson efficiency should be pure, beacuse in normal riding when part of electric power is about 30 to 40 % with eff no more than 75 % ( generator 90 % , converter 97 %, batterry 90 %,inverter 97 % motor 90 %)and with and rest of power has mechanical eff about 95 %, thus total eff is less than 90 %.
OK - anothe r point is that you get the maximum efficiency of the gearbox only in one poubnt (maximum torque). For partial load the efficiency is much lower.
You have to use a logitudunal model to analyse all the effects in detail.
In this Paper (only in German) we have described the main effects and efficiencies:
https://www.researchgate.net/publication/261174335_Beschreibung_der_Modellierungsart_sowie_der_Modellierungsparameter_von_Elektrofahrzeugen_in_der_Konzeptphase
Some important table is atteched
Article Beschreibung der Modellierungsart sowie der Modellierungspar...
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