[beefield]

> Stop/start reduces fuel consumption on test cycles like NEDC

I would like to know:

1. How long you need to idle to recharge the electricity to battery you use to restart the engine?

2. Does NEDC and others require that the battery has same state of charge at the end of the cycle as when beginning?

[Reason077]

Not really an issue. The energy used to restart the engine is small compared to the fuel savings. An electric starter motor is very efficient compared to a combustion engine at idle.

Stop/start will automatically disable if the battery has a low state of charge.