Newton remained conscious at the site. Pictures showed Newton smiling while being treated before he was strapped to a stretcher and placed in an ambulance. The driver of the other vehicle also had non-life-threatening injuries.
Police are investigating the cause of the crash.
The 25-year-old Newton has passed for 2,800 yards this season with 16 touchdowns and 11 interceptions for the Panthers (4-8-1). He has an additional 425 yards and three rushing touchdowns.
Last Sunday in the Panthers' 41-10 win over the New Orleans Saints, Newton threw three touchdown passes.