A 37-year-old man is expected to appear in the Pinetown Magistrate's Court on Thursday where he faces two counts of murder for allegedly killing two of his employees.
South African Police Services spokesperson Captain Nqobile Gwala said the victims were assaulted and set alight with petrol.
The man was handed over to police by his attorney.
The 31-year-old Mxolisi Mkhize and the 34-year-old Moses Sele Magama were admitted to hospital but both died shortly after being admitted.
They were employed to wash vehicles when the owner started asking them questions about a missing gearbox.
The incident happened in the Luganda area in Marianhill on Sunday.