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Transmission and drivetrainPart report

2021 BMW X7 Transmission and drivetrain Problems

Complaints
11about this part
Share
23%of 47 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 11 complaints about the transmission and drivetrain of the 2021 BMW X7, 23% of the 47 complaints for this model year.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Front differential complete fail. 56k miles. Replaced with new part, not an improved one but the same as factory at BMW dealership. My vehicle is 2021 x7 m50i. Reading other forums this is common if not standard on same models of this year. Very upset to have had to come out of pocket $9k to replace. Just outside of warranty. Was told will likely happen again in 50k miles. I wanted to keep this car like I have my other cars well into 170k miles. Looking to sell. Don’t understand how BMW doesn’t recall this.”

NHTSA complaint #11719575, filed 2026-02

“A failed front differential on my 2021 BMW X7 M50i, which currently has approximately 59,000 miles. BMW of Wesley Chapel has diagnosed the front differential as failed and provided an estimated repair cost of approximately $11,500. The Service Manager Stevon Budhu has also submitted a goodwill request on our behalf to BMW I have two young daughters whom I transport daily, and safety is a key reason we selected the BMW X7 as our family vehicle. This type of drivetrain failure at this mileage is unexpected for a premium BMW SUV and is understandably concerning.”

NHTSA complaint #11740484, filed 2026-05

“Wheel/Tire makes shudders during a turn at low acceleration or going up a hill leading to uncontrolled acceleration. I have brought the car in for inspection and service and the issue could not be replicated by the techs, however the problem occurs with daily driving. An online search shows that this is a very common problem with the transfer case.”

NHTSA complaint #11701777, filed 2025-11

“very known issue of catastrophic failure to the oil pump, made in Italy with plastic component, used in my vehicle. The part has been updated to metal components on bmw side without any knowledge to the customers with same part number. Faulty xdrive tranfer case, wheel jerks on low speed turning. Currently in class action lawsuit.”

NHTSA complaint #11728211, filed 2026-03

“The vehicle experiences a recurring drivetrain shuddering or slipping sensation at low speeds, especially when accelerating from a stop or while cornering. The issue originates from the transfer case, which has been identified as the malfunctioning component. The transfer case was previously serviced according to the manufacturer's official technical bulletin, but the problem returned after the prescribed post-repair evaluation period. …”

NHTSA complaint #11683156, filed 2025-08

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2026114%
202423%
2023511%
2022210%
20211123%
20201629%
2019510%

Other parts of the 2021 BMW X7

Engine
11 complaints
Electrical system
8 complaints
Other or unknown
5 complaints
Seats
5 complaints
Steering
5 complaints
Fuel system
4 complaints
Vehicle speed control
4 complaints
Forward collision avoidance
3 complaints
Brakes
2 complaints
Exterior lighting
2 complaints
Lane departure
2 complaints
Seat belts
2 complaints

← All problems reported for the 2021 BMW X7

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology