Four people are in police custody tonight after two police officers were injured during a rampage involving a stolen car in Sydney's inner west.

Four police vehicles were also damaged in the incident, which occurred when two unmarked police cars cornered the stolen silver Mercedes around 5.30pm on Euston Lane.

Police arrest four occupants of a stolen car after it crashed into four police vehicles in Alexandria.

Police allege the Mercedes reversed into one car, injuring a female officer inside, before accelerating into the other police cars.

A dog unit vehicle arriving at the scene was also hit, and a male officer sustained lacerations to his arms and legs.