repaired · 2026 Q3
Electrical system: starter assembly
NewRisk. Fire increases the risk of injury.
2021 BMW X4Problems, recalls & complaints
NHTSA has logged 6 owner complaints about the 2021 BMW X4, most often about the engine. It is covered by 7 safety recalls, and for recall 25V-636 the manufacturer reports only 71% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through April 7, 2026. Updated daily.
Complaints by system
Where the 2021 BMW X4 has problems
6 complaints grouped by the system owners reported.
2Engine
2Seat belts
1Power train
1Suspension
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Engine | 2 | 0 |
| Seat belts | 2 | 0 |
| Power train | 1 | 0 |
| Suspension | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
7 recalls
2021 BMW X4 recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2026 Q3
Starter assembly: relay
Park outsideRisk. A short circuit in the starter relay may increase the risk of a fire.
repaired · 2025 Q1
Seats
Risk. An improperly welded seat frame may not properly restrain the occupant during a crash, increasing the risk of injury.
repaired · 2023 Q2
Engine
Risk. Loss of braking assist can increase the risk of a crash.
Show 3 more recalls
repaired · 2021 Q2
Storage: tank assembly
Risk. Fuel may leak through the failed weld, increasing the risk of a fire.
repaired · 2023 Q1
Sensing system: camera
Risk. If the driver relies on only the rearview camera image, the missing or reduced rearview image view can increase the risk of a crash or injury.
repaired · 2020 Q4
Sensing system: camera
Risk. If the driver relies on only the rearview camera image, the reduced rearview image view can increase the risk of a crash or injury.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with BMW.
Best & worst years
2021 vs. every other X4 year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the X4 median. How we score
'14'15'16'17'18'19'20'21'22'23'24'25'26
- Avoid
- Caution
- Solid
- Best
- Not rated
NHTSA crash tests
2021 BMW X4 safety ratings
2021 BMW X4 SUV AWD in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.
- Stability control: Standard
- Forward collision warning: Standard
- Lane departure warning: Standard
In owners' words
What X4 owners report
Recent engine complaints filed with NHTSA, shortened. Personal details are removed.
I am reporting a safety concern regarding BMW vehicles equipped with the B58 Technical Update (B58TU) engine, commonly found on models from 2019 to 2021. The oil pump in these vehicles is failing prematurely. I was told this by service technicians at BMW and confirmed it through my own research.…
The contact owns a 2021 BMW X4. The contact received notification of NHTSA Campaign Number: 25V636000 (Electrical System). While the vehicle was in park(P), there were abnormal sounds coming from the engine. The contact stated that when the vehicle was shifted into drive(D) and the brake pedal was…
Own a 2021 X4?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.