BMW is recalling nearly 28,000 vehicles in the U.S. due to a defect in the driveshaft-to-differential connection [1].
The recall is significant because the mechanical failure can lead to a total loss of power to the rear wheels. In certain scenarios, this defect could allow a vehicle to roll away if the driver does not engage the parking brake [1], [2].
The affected fleet includes recent models of the BMW 5 Series, 7 Series, and 8 Series [1], [3]. According to filings with the National Highway Traffic Safety Administration, the issue stems from excessive wear at the connection point between the driveshaft and the differential [2].
When this connection wears down, the vehicle may lose its ability to transmit power to the rear wheels [1]. This failure creates a safety hazard, particularly when the car is parked on an incline without the parking brake active [2].
Repair methods for the recalled vehicles vary based on the extent of the wear. In some instances, BMW said it will perform repairs using an adhesive glue to secure the connection [3]. However, if the wear is too advanced for adhesive to be effective, more extensive mechanical repairs will be required [3].
BMW said it announced the recall this month to address the potential for these rare but dangerous failures [1], [2]. The company is working to notify owners of the affected 5, 7, and 8 Series models to bring their vehicles in for inspection and repair [1].
“The defect could allow a vehicle to roll away if the driver does not engage the parking brake.”
This recall highlights a specific vulnerability in BMW's high-end luxury drivetrain architecture. The use of adhesive as a primary repair method suggests the defect is a surface-level or bonding failure rather than a structural break in the metal components. However, the risk of roll-away accidents elevates this from a performance issue to a critical safety concern, placing more emphasis on the importance of manual parking brake engagement for affected owners.
