Third death from SA road crash

A man has died in hospital, taking the toll from a road crash north of Adelaide last month to three, including two teenagers.

Police say the 46-year-old died on December 30 from injuries suffered in the crash at Lochiel three days earlier.

Also killed in the crash were the 19-year-old driver, who lost control of his car and hit a tree on the Augusta Highway, and a 17-year-old girl, who was a rear-seat passenger.

They both died at the scene.

The man's death left the South Australian road toll for 2022 at 71 compared to 99 the previous year.