Two male police officers and the driver of the Volvo were injured during the incident on Sunday morning (August 6).
The incident happened shortly before 7.25am and debris was sprawled across Uxbridge Road, at the junction with Dane Road, outside Ashby's pub.
A spokesperson for the Metropolitan Police spokesperson said: "The London Ambulance Service and London Fire Brigade are in attendance.
Their injuries are not being treated as life threatening and non-life changing.
outside Ashby's pub after the smash
"The Met's Directorate of Professional Standards has been informed as a matter of course."
Anyone with information is asked to call the Met on 101.