The firm, which employs 7,000 people at its Sunderland manufacturing plant, had previously warned that its Wearside operation would be "unsustainable" if there was no deal at the end of the transition period following the UK's departure from the EU.
A spokesperson for the Japanese firm said:
Nissan's site in our region opened in 1986. It is the second-biggest producer of cars in the United Kingdom, behind Jaguar Land Rover.
Mike Hawes, chief executive of industry body the Society of Motor Manufacturers and Traders (SMMT), said: