Miracle escape in Sydney's west as out-of-control car ploughs through the front door of a busy Guildford day care centre packed with kids

Children at a day care centre in Sydney's west have escaped injury when a runaway car smashed through the building's entrance on Friday morning.

The 2023 red Toyota LandCruiser Prado ploughed through the walls and front door of Kids World Kindy in Guildford's Palmer Street around 10.15am.

But amazingly no-one inside the building or in the car was hurt in the incident.

Staff and children were evacuated out the badly-damaged building through a rear exit while emergency services tended to the female driver in the centre's car park.

Worried parents flocked to the centre to collect their kids in the wake of the accident but were relieved to find everyone had escaped unscathed.

'The kids are fine - they're all nice,' said one parent. 'They're all good.'

Police have launched an investigation into the accident and the driver, in her 30s, is assisting their inquiries.

'On arrival, officers attached to Cumberland Police Area Command located a Red Toyota SUV had collided into a wall,' said a police spokesman.

'The driver - a woman in her 30s - was subject to a roadside breath test, which returned with a negative result.

'There were no injuries reported due to this incident. The woman is assisting police with their inquiries.'