The union striking for a second day at Volkswagen's giant plant in Mexico on Thursday said it hoped to cut a deal with management in its pay dispute by the weekend.

Union leader Jose Luis Rodriguez told Reuters that talks with management late on Wednesday did not end the deadlock, although the two sides planned to resume negotiations on Friday.

The union reportedly aimed to reach a deal with management by the weekend to pave the way for the return of workers to the plant, the only one in the world producing the popular New Beetle.

The report noted that thousands of union workers walked out on Wednesday morning at the plant in Puebla after rejecting a 4.45% salary increase offered by the company.

Striking workers, seeking a 8.5% wage hike, will hold talks among themselves early on Friday before union chiefs go back to the negotiating table with management, Rodriguez told the news agency.

"They (the company) have not yet improved their offer, but they have said there is a possibility to improve their offer," Rodriguez told Reuters. "The stances of both sides are negotiable, but until there is an agreement the strike continues."

The last strike at the plant was in 2001 and lasted for 18 days before the two sides finally reached an accord, the report added.