Bmw
X7

Transfer case and front and rear differentials have failed - bmw claims lifetime fluid which is clearly not accurate

Description of the Problem: At ~57,000 miles, the front differential on my 2025 BMW X7 M50i failed and was replaced by an authorized dealer in March 2025. The issue was believed resolved, but in October 2025 the vehicle was returned to Advantage BMW because of a question about when the vehicle showing shuttering, vibration, and binding during low-speed turns. The car has been at the BMW dealership since 10/15/2025, where it was diagnosed with a transfer-case failure. Both failures occurred without any warning lights, messages, or diagnostic alerts. The symptoms were only mechanical noise (front differential) and driveline vibration (transfer case). The dealer confirmed that BMW issued Service Bulletin SIB 27 02 20, describing similar transfer-case/driveline malfunctions. The failed components are available for inspection. This issue poses a safety hazard, as the xDrive AWD system controls traction and stability. Sudden drivetrain failure without warning can cause loss of power distribution between axles and loss of control during acceleration, turning, or highway driving. Multiple owners have reported identical failures on the BimmerPost G07 X7 forum (https://g07.bimmerpost.com/forums/showthread.php?t=2011112), indicating a broader defect pattern. Summary: Two major drivetrain components—the front differential and transfer case—have failed on my 2025 BMW X7 M50i under 60,000 miles with no warning indicators. The vehicle has been out of service since 10/15/2025. Given BMW’s acknowledgment in SIB 27 02 20 and widespread owner reports, this represents a potential safety-related defect requiring investigation.

I am filing this complaint regarding a persistent safety issue with the rear cross traffic alert (RCTA) system in my 2022 BMW X7. The system consistently fails to detect approaching vehicles, pedestrians, and cyclists unless they are within approximately two feet of the rear of the vehicle. This extremely limited detection range renders the system effectively useless for its intended purpose of preventing collisions while reversing, especially in environments such as parking lots, residential streets, and school zones. On multiple occasions, both my wife and I have experienced near accidents while reversing, including incidents involving moving vehicles and pedestrians—some of whom were small children at our child’s daycare. In all of these cases, the RCTA system failed to provide any warning or alert. This lack of detection poses a serious safety hazard not only to my family but also to those in the vicinity of the vehicle. Given that rear cross traffic alert systems are a key safety feature designed to reduce backover accidents, especially in scenarios where the driver’s visibility is compromised, I believe this constitutes a serious design or calibration flaw. I am concerned that this issue may not be isolated to my vehicle alone, and I urge the NHTSA to investigate this matter further to determine whether a recall or software update is necessary to correct the defect.

The vehicle had a spill in the cup holder. The cup holder has holes and does not hold liquid. This spilled into the electronics underneath and around it. The car suddenly could not be put into park. It would roll when attempting to do so. The electronics control park and the emergency brake from the same electronic panel. Preventing save disabling of the vehicle required chalking to prevent movement.

On [XXX], at [XXX], while driving at 65 mph on [XXX] between Chesapeake and Virginia Beach, VA, the front panoramic sunroof of my 2022 BMW X7 xDrive40i spontaneously shattered without warning. The sunroof and interior sunshade were fully closed, with no prior damage or warning signs. The glass exploded with a loud gunshot-like noise, causing glass to fall into the cabin. My wife, who was driving, was startled and jerked the wheel, nearly causing an accident. Conditions were clear, and no debris or impact occurred. The fracture showed outward bowing and horizontal cracks, typical of spontaneous tensile failure in tempered glass. No impact point was found. BMW acknowledged they have “seen this before” but denied my warranty claim, blaming impact with no proof. The tow truck driver also stated his company has towed at least two other BMW X7s recently with the same failure. I have found multiple similar complaints already documented in the NHTSA database, confirming this is not an isolated case. I am submitting detailed photographs and respectfully request a formal investigation into the safety and integrity of BMW’s panoramic sunroof design and materials. I am also filing a complaint with the Virginia Attorney General’s Office to ensure this issue is reviewed at both federal and state levels. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

When backing out of my driveway while moving in reverse - I get absolutely zero audio warning of cross traffic vehicles or people. I’ve had two near misses where the vehicle/person was in my blind spot and the car never indicated anyone was close

The steering wheel locked in position while driving. The vehicle would not turn, which almost caused an accident. Warning lights came on: Evasion Assistant/Steering Assistant. Once the car was pulled over and restarted, the warning lights temporarily stopped but returned and malfunctioned again. BMW confirmed that there was a steering malfunction and found that a leaking water pump infiltrated the steering rack and electrical harness which created the steering system to malfunctioned. BMW only approved replacing the water pump. The technician stated they recommended replacing the steering rack and electrical harness, but BMW said for them to test drive for 20 miles, if no error pops up then return the vehicle back to the customer!

In 2 years of owning the vehicle they have worked only three times. Two of the times was within 10 feet of a car pass. There has been hundreds of opportunities. The feature does not work.