Small vibration and sound when low throttle

[Paulo Silva]

Hello guys, i have a Cupra leon hybrid 204ps with 3k mileage. On electric mode, at low speed like 10-20 km/h with low rpm, sometimes i feel a vibration and a small sound that disappears right after i speed up the car. It is the first time that i drive an hybrid so im not familiar with the behaviour of electric motor. Is this normal to happen?
Thank you