G20 330e Idle speed with warm engine 950 rpm ..

  • Hi. G20 330e 07/2020 the car was bought at auction

    Idle speed with warm engine 950 rpm (air mass readings 16 kg/h). Sometimes a slight vibration may occur (at this time the air mass readings increase to 23 kg/h). The same situation with the air conditioner off



    Is this normal? :/

    what is the reason for high idle speed?