Volvo is recalling 507,000 vehicles globally due to the possibility of a fire risk identified within engines.
The automaker said investigations identified that the plastic intake manifold within the engines may “melt and deform”, and in a worst-case scenario “a localised engine bay fire may occur”.
Volvo said it had received no reports of accidents or injuries caused by the faulty part, but confirmed that all customers would receive a letter containing details of corrective action.
It said while a number of corrective measures had been carried out to improve the situation, “a complete solution is still under development”.
Affected vehicles have a two-litre, four-cylinder diesel engine, and include the 2014-19 versions of S60, S80, S90, V40, V60, V70, V90, XC60 and XC90 models.
Owners of the affected vehicles have been told it is safe to continue to use their car but are advised to look out for issues such as an illuminated engine warning light, a lack of power or an unusual smell.
In a statement, Volvo said: “We take this situation very seriously and are working to finalise a fix for the cars.
“We are taking full responsibility to ensure the highest quality and safety standards of our cars. We will do our utmost to perform this action without any unnecessary inconvenience to our customers. We apologise for the inconvenience caused and are grateful for our customers’ cooperation.”
A spokesman for Volvo said the automaker could not comment on how much the recall would cost, but confirmed corrective measures would be free of charge for customers.
Earlier this year, the automaker issued a recall on over 200,000 cars with diesel engines due to the possibility of cracks appearing in fuel lines which could cause them to leak, posing a fire risk.