Four cars collided in eastbound lanes near the King Georges Road overpass, Beverly Hills, on Friday at 7.15pm.

Police said another two cars crashed into the group before two Holdens, a Commodore and Cruze, caught fire.

An Ambulance Service of NSW spokesman said three people were taken to St George Hospital.

Paramedics took a fourth motorist to Bankstown Hospital.

They had all suffered minor injuries.