Driver in high-speed Sydney cop chase

A man in a stolen Porsche has led police on a dramatic high speed chase through Sydney before crashing and flipping the car on its roof, police allege.

An officer on a motorcycle started pursuing the Porsche at Annandale, in the city's inner west, at 6am on Wednesday.

The chase ended in Leichhardt when the luxury car, which was allegedly stolen from a Vaucluse property earlier that morning, hit a raised pedestrian crossing and flipped.

The 30-year-old unlicensed driver fled on foot but police later tracked him down, and he's due to face court on Thursday.