A racing car driver has died in a single-vehicle crash during a state championship event at a motorsport park.

Emergency services were called to Sydney Motorsport Park after the incident on Saturday night during the NSW Motor Race Championship.

Paramedics gave medical treatment to the driver, aged 53, but he died at the scene.

Police have established a crime scene and will investigate the crash.

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Officers will prepare a report for the coroner.

Motorsport Australia has been notified, police said.