'Incompetent' Aussie woman caused two fatal crashes at same spot

Mother of two Michelle Thiele caused the two fatal crashes by failing to look to her left when entering the intersection, South Australia's deputy coroner has found.

Thiele told deputy coroner Anthony Schapel she believed she was a competent driver despite causing the fatal crashes at a T-junction at Pompoota near Mannum, about 80km east of Adelaide.

"Both men died in collisions at the same location in almost identical circumstances and at the hands of the same motorist," Mr Schapel said in his coronial findings delivered today.

"They both died when that same motorist failed to give way to each of them at the same intersection."

In April 2000, Thiele caused a collision that killed 69-year-old car driver John Mitchell.

In June 2007, at the same intersection, Thiele's ute struck and killed 51-year-old motorcyclist Graham Bryant.