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EnginePart report

2021 BMW X7 Engine 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 engine of the 2021 BMW X7, 23% of the 47 complaints for this model year. 1 a fire, according to the filers.

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.

“While driving my 2021 BMW X7 at approximately 32,000 miles, the vehicle suddenly displayed a drivetrain malfunction warning along with a low engine oil pressure warning. At the same time, I noticed excessive heat and a strong burning smell coming from the vehicle. I also heard abnormal mechanical noises coming from the engine, which sounded like knocking or grinding. The engine failure occurred unexpectedly at relatively low mileage and required extensive repairs, with estimated costs of approximately $15,000. …”

NHTSA complaint #11732539, filed 2026-04

“I was driving a car with family and all of a sudden we all started smelling a burning smell but we thought it must be from outside. However, in just few seconds the vents started throwing vapors so I stopped the car hoping it may stop if some minor damage. However, the hood started throwing oranges color fumes and by the time we all left the vehicle the entire front hood/engine area started burning. There were no indications of any faults in the car. …”

NHTSA complaint #11447812, filed 2022-01

“two fan blades came off and punctured my radiator. I replaced the radiator/fan for 4300 and when I picked it up, it said the power was limited and to get it to a BMW dealership right away and when I took it to BMW, they told me the engine was shot and cylinder four was completely destroyed. Then both through BMW corporate and the dealership that I bought the car at new in 2022 I was told there was nothing that they would do at all. In fact I was told it would cost $46,500 plus tax to replace the engine. …”

NHTSA complaint #11695567, filed 2025-10

“Front differential needing completely replaced at 44,000 miles. Might need a transfer case replacement as well. Original quote of $8,300 and if the transfer case is needing replaced, another $8,000-$10,000 job. I have done research online that a lot of other people with X7's are having this issue. Autobahn BMW in Fort Worth, Texas confirmed the issue and that it needs complete replacement done. There were no warnings, no lights on the dash, and nothing that would indicate there was an issue until leaking starting and I could smell the oil burning.”

NHTSA complaint #11711828, filed 2026-01

“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

Related service bulletins

Engine: other model years

YearComplaintsShare of year
202527%
202435%
202325%
202215%
20211123%
20201323%
20191123%

Other parts of the 2021 BMW X7

Transmission and drivetrain
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 27, 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