BMW is recalling 4,000 vehicles worldwide after defective control units were discovered in its V8 and V12 engines during tests. The models affected in the recall are cars first registered from May to July 2004.

A BMW spokesman said that the faults affected less than 100 cars in the UK.

Due to a temporary production fault, deficient parts were supplied and installed in new 5, 6 and 7 Series and X5 models with V8 or V12 cylinder petrol engines, the company said in a statement.

The flaw has led to the failure of the power steering assistance systems as well as the brake booster following repeated operation of the brake. The engine may cut out completely after a running for a short time.

As a precautionary measure, BMW has advised car owners not to drive their vehicles before contacting their dealer or company hotline. The company has pledged to contact all owners as a precaution.