[E-Trabant]

So, anybody know about what to expect from an automatic transmission that is electronically controlled in general when it comes to consuming power (when used in an electric vehicle? My main concern would be that having to power it would be just another thing that needs relatively much power and hence affect the range, or isn't it anything to worry all that much about? Especially compared to how well you can so to speak 'tune' it to run more efficiently anyways hence it paying back well enough for the power it is consuming by itself? Thank you guys in advance!