Police are appealing for any witnesses to a motorcycle and car crash at Canley Heights on Saturday.
Just after 6pm, emergency services were called to the Cumberland Highway, following reports of a crash between a motorcycle and a Honda Odyssey.
Officers from Fairfield Police Area Command attended and commenced an investigation.
The rider - a 29-year-old man - was treated at the scene before being taken to Liverpool Hospital in a critical condition.
The driver - a 66 year-old man - was not injured and has undergone mandatory testing.
Officers established a crime scene. As inquiries continue, police are appealing for any witnesses or anyone with information or dashcam footage to contact Fairfield Police or Crime Stoppers on 1800 333 000.