AI Damage2021 BMW X6: common problems
Owners of the 2021 BMW X6 filed 7 complaints with NHTSA, most often about electrical system and service brakes. The maker issued 244 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 7
- involving a crash
- 1
- Technical service bulletins (TSB)
- 244
What fails most often
- 1 Electrical system 29% of all complaints
- 2 Service brakes 29% of all complaints
- 3 Forward collision avoidance 29% of all complaints
- 4 Engine and cooling 14% of all complaints
- 5 Steering 14% of all complaints
- 6 Air bags 14% of all complaints
- 7 Backover prevention 14% of all complaints
- 8 Lane departure 14% of all complaints
- Electrical system: 2 complaints (29% of all); manufacturer bulletins for this component: 72.
- Service brakes: 2 complaints (29% of all); manufacturer bulletins for this component: 6.
- Forward collision avoidance: 2 complaints (29% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 3.
- Engine and cooling: 1 complaints (14% of all); manufacturer bulletins for this component: 22.
- Steering: 1 complaints (14% of all); manufacturer bulletins for this component: 18.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 4.4 L · petrol · turbo · 8 cyl
- 3 L · hybrid · turbo · 6 cyl
- automatic, 8-speed
Drive: AWD, RWD
Symptoms owners describe
How many of the 7 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 2 | 0 | 72 |
| Service brakes | 2 | 0 | 6 |
| Forward collision avoidance | 2 | 1 | 3 |
| Engine and cooling | 1 | 0 | 22 |
| Steering | 1 | 0 | 18 |
| Air bags | 1 | 0 | 12 |
| Backover prevention | 1 | 1 | 7 |
| Lane departure | 1 | 0 | 7 |
| Equipment | 0 | 0 | 83 |
| Structure | 0 | 0 | 26 |
| Seats | 0 | 0 | 20 |
| Visibility | 0 | 0 | 20 |
| Exterior lighting | 0 | 0 | 9 |
| Fuel system | 0 | 0 | 8 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The automatic parking feature was being used to park in garage the vehicle proceed to back up without stopping and the emergency braking system didn’t engage leading to the vehicle crashing. I could have been injured if the structure of the house didn’t stop the vehicle.
In addition, the contact stated that while attempting to start the vehicle, the vehicle failed to start. The vehicle started after several attempts. No warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed with starter motor failure.
Wiring from knee air bag to module failed. Had to repair wiring from front driver and passenger knee air bags. Wiring had a short to ground. Resulted in a $1600 bill.
Overtime, the contact stated that the vehicle either failed to start or was slow to start while depressing the START/STOP button. The vehicle was taken to a dealer and the starter was replaced; however, a month later, the drivetrain message returned.
If I have made the purchase depositing 100000 and the rest in monthly payments
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 1,591 of 2,102 model years in the NHTSA data (among the 24% least complained about).
On average one model year of the X6 has 5 complaints (11 years in the data). This year has 7, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Forward collision avoidance. Radar and camera: calibration after bumper or windshield replacement.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- The manual starting of electronic engine oil level measurement from inside the vehicle, usually…
The manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
- The EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has…
The EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.
- A check control message (CCM) for the restraint system (Air bag) appears
In the instrument cluster, the redair bag warning light lights up permanently. One of the following fault codes is stored in the ACSM (air bag control unit): 930949 - Knee airbag, driver: Short circuit to negative…
- The Radiator Grilles Lower Active Air Flap Assembly limited warranty for defects in materials and/or…
The Radiator Grilles Lower Active Air Flap Assembly limited warranty for defects in materials and/or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery…
- A vehicle listed above may arrive with a Check Control Message (CCM), and/or malfunction indicator…
A vehicle listed above may arrive with a Check Control Message (CCM), and/or malfunction indicator lamp(MIL) illuminated. After carrying out the vehicle test, one or more of the stored faults indicate that the…
- A groaning noise is present from the door frame of any door, most commonly when driving over rough roadsor…
A groaning noise is present from the door frame of any door, most commonly when driving over rough roadsor during body flex. This situation may be worse in vehicles which are regularly waxed in th e area of the door…
- A check control message is displayed, indicating that the parking assistance systems have…
A check control message is displayed, indicating that the parking assistance systems have limitedfunctionality due to errors detected within PDC sensors. The warning indicates parking assistance featureshave limited…
- CLASS ACTION SETTLEMENT
F95 F96 G05 G06 G07 FRONT CENTER CONSOLE CUPHOLDER
- The belt pulley on the mechanical coolant pump may fracture allowing the engine drive belt to come off…
The belt pulley on the mechanical coolant pump may fracture allowing the engine drive belt to come off thecoolant pump and alternator.
- A check control message (CCM) for the restraint system (Air bag) appears
In the instrument cluster, the red air bag warning light lights up permanently. One of the following fault codes is stored in the ACSM (air bag control unit): 930949 - Knee airbag, driver: Short circuit to negative…
- A rattling noise can be heard emanating from the area of the rear seat backrest of the second row ofseats
The noise does not occur when the rear seat backrest is folded down.
- The seat leather upholstery detaches from the front of the thigh support (aka knee bolster) of either…
NHTSA lists 244 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2021 BMW X6?
Owner complaints to NHTSA most often mention: electrical system, service brakes, forward collision avoidance. Total complaints: 7. The most frequent symptoms in complaint texts: won't start (29%), A/C or heater (14%), warning lights, check engine (14%).
How many service bulletins (TSB) were issued for the 2021 BMW X6?
NHTSA lists 244 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2021 BMW X6 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2021 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.