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In the typical Model S, in daily practice.
Wikipedia says that 80% would be theoretically possible.
As regards electric cars, the DoE explains that the efficiency between the electric motor and the wheels amounts to 60%.
Let us consider the electric motor efficiency {\displaystyle \eta _{eng}=0.6}
and the braking proportion in towns {\displaystyle p=0.46}
and on motorways {\displaystyle p=0.1}
.
Let us introduce {\displaystyle \eta _{recup}}
which is the recuperated proportion of braking energy. Theoretically, it can reach up to 80%.