2021 BMW 750LI Owner Complaints

1. What component or system failed or malfunctioned, and is it available for inspection upon request? The suspected failed component is the front differential carrier bearing on my 2021 BMW 750i xDrive. [XXX] BMW of Westmont, Illinois diagnosed carrier bearing damage and oil leaks and recommended replacement of the front differential. The vehicle has approximately 53,791 miles. The failed differential/carrier-bearing assembly is currently available for inspection, subject to the vehicle remaining at the dealership and before the component is replaced or discarded. I have specifically requested that BMW and the dealership retain the failed component if inspection or engineering analysis is necessary. The dealership's repair order is XXX, dated XXX. 2. How was your safety or the safety of others put at risk? The vehicle developed a significant grinding noise during acceleration from a stop. The grinding continues for approximately 5–15 seconds, depending on how long the vehicle is under acceleration, and goes away after the vehicle reaches approximately 30–40 MPH. I am concerned that failure of a major front drivetrain component could result in an unexpected loss or interruption of proper power transfer, particularly during acceleration from a stop or at low speeds. The vehicle also has a documented differential oil leak progressing to a drip. I am concerned that continued loss of differential lubricant could contribute to further mechanical damage or failure. I have therefore limited use of the vehicle while seeking diagnosis and determining the appropriate repair. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The vehicle was inspected by Laurel BMW of Westmont, Illinois, an authorized BMW service center. The dealer documented the customer's complaint as a grinding noise when accelerating from a stop and documented the diagnosis: “Front differential replacement due to carrier bearing ,oil leaks INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA),

NHTSA ID

11758193

Incident

Aug 10, 2026

I purchased a vehicle from Ed morse Cadillac on 12/31/2025. I find out in April that the vehicle was sold with undercarriage damages listed in Carfax. The dealership, never disclosed anything, did not show me the reports, and i did not sign anything to accept the damages. They do not want to take responsibility. The vehicle might be dangerous to drive and is really demeaning in value because of this.

NHTSA ID

11733572

Incident

Dec 31, 2025

The contact owns a 2021 BMW 750I. The contact stated that upon start the vehicle, the low tire pressure warning light illuminated. The contact initially took the vehicle to the dealer and an independent mechanic however, the cause of the failure was not determined. The failure persisted and the contact took the vehicle back to the independent mechanic who discovered a crack in the rear driver’s side rim. The tire was replaced; however, a month later, the same failure occurred on the front passenger’s side rim. The vehicle was taken back to the independent mechanic where he was informed that the failure was common with the model vehicle. The tire was replaced. Recently, the failure occurred on the front driver’s side rim. The dealer was notified of the failure and offered insurance to cover the cost of future tire repairs. The manufacturer was not notified of the failure. The most recent failure was repaired. The failure mileage was approximately 25,000.

NHTSA ID

11478208

Incident

May 1, 2022

Mileage

25,000 mi