Sydney baby crushed under 4WD by dad

A baby has been rushed to a hospital in Sydney's west after being crushed by a 4WD in the driveway of the family home, reportedly driven by her own father.

The 13-month-old girl was hit by the car at her Engadine home just before 2pm on Sunday.

She was airlifted to The Children's Hospital at Westmead in a serious but stable condition.

The girl's father had just finished washing the 4WD and was moving it back into the garage when he felt the girl under the front wheel, a CareFlight spokesman said.