Nissan accused of manipulating emissions tests by South Korean government
The South Korean government has now accused Nissan of manipulating emissions tests for its Qashqai model.
Nissan has denied any wrongdoing, but the government is planning to fine the car maker 330m won (£195,000) and sue the head of Nissan's Korean operation.
The allegations come after a probe of 20 diesel car models by the environment ministry.
Read more: Nissan to buy 34 per cent of Mitsubishi Motors
The government said defeat devices had been fitted to cheat the emissions tests.
"Nissan Motor has never illegally manipulated any vehicles we have produced so far and used defeat devices in those cars," Nissan said in a statement.
The news comes after Volkswagen admitted to cheating emissions tests last year, while last month Mitsubishi Motors admitted it had falsified fuel efficiency test data.
It was the revelations from Mitsubishi that spurred Nissan to announce it was buying 34 per cent of the company in an effort to turn it around.
"We will help this company address the challenges it faces particularly in restoring consumers’ trust in fuel economy performance," Carlos Ghosn, chief executive of Nissan and Renault, said last week.