Salim Mehajer has been charged with conspiracy to commit fraud and perverting the course of justice following a police investigation into a car crash in October.

The 31-year-old was arrested on Tuesday morning along with three other people following an extensive police investigation into the crash, which police allege was staged to avoid court and commit insurance fraud.

A police spokeswoman confirmed Mr Mehajer had been charged and refused bail, and was due to face Waverley Local Court on Tuesday afternoon. The other three people arrested on Tuesday were still being processed, police said.

Mr Mehajer was driving a Mercedes AMG when it was involved in a collision with a Mitsubishi Outlander on Delhi Street, Lidcombe, about 8.45am on October 16.