The union would report back soon on the outcome of the meeting, said National Union of Metalworkers of SA (Numsa) spokesperson Castro Ngobese.
"We will issue a statement later today [on Wednesday] or early tomorrow [Thursday] morning," he said.
Meanwhile, a march by Numsa members in KwaZulu-Natal, scheduled to take place on Thursday, has been put on hold.
Around 5 000 workers were to have marched in Durban, said Numsa KwaZulu-Natal chairperson Basil Cele.
"Workers are hereby advised to go to their plants to receive a report on the outcomes of the special NEC," he said in a statement.
"Cedric Gina, the president of Numsa will be present to address and communicate the outcomes of the [meeting]," he said.
Workers in the vehicle sector have been on strike for three weeks.
Employers have offered a 10% wage increase, which the union has rejected.
The seven major vehicle manufacturing plants affected by the strike are: BMW, Ford, General Motors, Mercedes-Benz, Nissan, Toyota, and Volkswagen.