A woman is fighting for her life after a violent three-vehicle crash at an intersection.

Emergency services rushed to the intersection of Teviot Road and Cusack Lane in South Maclean, Queensland, just after 8pm on Friday, where a white Ford Falcon allegedly entered the intersection and collided with a turning Hyundai i30 before crashing into a silver Mazda 2.

The driver of the Hyundai i30, a woman in her 20s, was transported to Princess Alexandra Hospital in Brisbane with life-threatening injuries.

Her passenger, along with five people in the Falcon and two from the Mazda, escaped with minor injuries.

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The Forensic Crash Unit is probing the scene, with early investigations focusing on whether speed played a role.

Police are urging anyone who witnessed the incident or has dashcam footage to come forward by contacting Policelink or calling 131 444.