BMW has issued a recall in the United States about the M2 and M4 Coupe.

Mind you, only 21 units of both models are affected, namely one M4 and 20 M2s, and the reason is an error on the assembly line that saw the fuel injectors being installed without a damping component.

The latter is used to reduce vibration, and without it, the connection between the fuel line and fuel rail could be damaged over time. This might lead to a fuel leak, which, in the presence of an ignition source, would increase the risk of a fire, although BMW is not aware of any accidents or injuries related to this problem.

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According to the NHTSA, the issue was discovered on October 15 by a worker during the engine assembly process. A review was initiated, and after further evaluations, they decided to announce a voluntary safety recall one week later.

The only M4 Coupe included in this safety recall was made on March 17, 2020, while the M2s were put together between June 23 and October 14 this year.

The recall is expected to begin on December 21; dealers were informed at the end of October and owners will be notified via first class mail. Subsequent to that date, the company’s authorized technicians will inspect each car, and if the damping component is missing, then the injectors and fuel rail will be replaced. All work will be carried out free of charge.