The UK government on Friday warned that a cyberattack on Jaguar Land Rover "is having a significant impact" on the company and automotive supply chain.
Britain-based JLR announced on September 2 that it had been hit by a cyberattack, forcing it to shut down systems, severely disrupting its sales and production operations.
It has heaped more pressure on the group owned by India's Tata Motors, as it suffers fallout from US tariffs.
"The recent cyber incident is having a significant impact on Jaguar Land Rover and on the wider automotive supply chain," the Department for Business and Trade said in a joint statement with UK car trade body SMMT.
Friday's statement came after the SMMT held an extraordinary meeting with DBT officials.
"This allowed us to listen to suppliers directly and understand the challenges and concerns they are facing," it said, adding that government cyber experts are in contact with JLR "to support the task of restoring production operations".
JLR, which believes some data was accessed in the cyberattack, said earlier this week that it does not expect production to restart before next Wednesday.
British media, however, report that the shutdown could extend until November, potentially costing the carmaker tens of millions of pounds.
JLR had yet to respond to an AFP request for comment on Friday.
The UK auto sector employs more than 800,000 people, the vast majority in the supply chain, and some fears prolonged JLR disruption could lead to permanent job losses and even bankruptcies for some small businesses.
The Unite union this week said that some of its members were being laid off with reduced or zero pay because of the fallout.
It urged the government to financially support affected workers.
Cyber gangs have increasingly targeted luxury brands and retailers in the UK.
Marks and Spencer recently suffered a cyberattack that crippled its online services for weeks and cost the group £300 million ($405 million).
The luxury department store Harrods and the Co-op food chain have also been targeted this year.