BMW has extended a recall of some of its best-selling models to cover 1.6 million cars amid concerns that a fault could cause them to catch fire.
In August, the premium brand announced in was recalling 480,000 vehicles across Europe and Asia after an exhaust system fault was uncovered.
Now, it has confirmed the technical campaign has been expanded to cover cars with a â€œsimilar technical setupâ€ following internal investigations.
In total, 1.6 million cars worldwide are affected by the recall, with an estimated 268,000 UK owners being asked to take their car to a dealership to be checked over. If a fault is found it will be repaired free of charge.
Affected models are four- and six-cylinder diesels built between August 2010 and August 2017 and come from the 1 Series, 2 Series, 3 Series, 4 Series, 5 Series, 6 Series, X3, X4, X5 and X6 ranges.
BMW says individual production periods vary per model and affected customers will receive a letter notifying them. You can also check if your car is affected on the Governmentâ€™s recall website.
The fault relates to the leakage of glycol from the exhaust gas recirculation (EGR) cooler. In combination with typical soot deposits and the high temperatures normally present in the EGR module this might result in smoldering particles. This could lead in very rare cases to the melting of the intake manifold and in extremely rare cases result in fire.
BMWâ€™s latest statement insisted that the results of its latest investigations â€œposed no significant riskâ€ to customers.
It continued: â€œNonetheless the BMW Group decided to further reduce even this minor risk by expanding the country-specific technical campaigns. It is the goal of BMW Group to support the trust and confidence of our customers in our products.â€
Earlier this year the German car maker was forced to recall 312,000 cars over a separate electrical fault which posed a risk of them cutting out unexpectedly.