AI Damage2021 BMW M850I: common problems
The maker issued 128 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 128
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
- automatic, 8-speed
Drive: AWD
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Equipment | 0 | 0 | 57 |
| Electrical system | 0 | 0 | 39 |
| Steering | 0 | 0 | 14 |
| Engine | 0 | 0 | 8 |
| Structure | 0 | 0 | 8 |
| Backover prevention | 0 | 0 | 7 |
| Visibility | 0 | 0 | 6 |
| Engine and cooling | 0 | 0 | 5 |
| Seats | 0 | 0 | 5 |
| Service brakes | 0 | 0 | 5 |
| Exterior lighting | 0 | 0 | 3 |
| Fuel/propulsion system | 0 | 0 | 3 |
| Fuel system | 0 | 0 | 3 |
| Lane departure | 0 | 0 | 2 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- The Fuel Injector Condition-Specific Repair Coverage Program applies to qualifying repairs for the…
The Fuel Injector Condition-Specific Repair Coverage Program applies to qualifying repairs for the required replacement of one or more the fuel injectors which were determined to have failed due to a buildup of…
- Under certain driving situations, coolant leaks onto the fuel injectors on cylinder bank (5-8)
- The basic conditions for initializing the power windows are not met
- The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3)
FaultB7F8F9 ÃÂâÃÂÃÂÃÂàÃÂâÃÂÃÂÃÂÃÂHU-H: ResetÃÂâÃÂÃÂÃÂàwill be stored in the HU-H3.
- The electrical system of BMW vehicles has been subject to an ongoing development process over the last few…
The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important…
- At low outside temperatures (below 40 degrees F) and slow driving speeds (i.e
when parking, maneuvering)with a large steering angle, the front end can be slightly axially misaligned. This can be felt (jerking)/ heard via an acoustic acknowledgement (clunk) as seen at the 11 second mark of the…
- A vehicle arrives at your center to be diagnosed for a micro-leak in the fuel evaporative (EVAP)…
A vehicle arrives at your center to be diagnosed for a micro-leak in the fuel evaporative (EVAP) system(NVLD natural vacuum leak detection). For this condition, the following fault is stored in the DME: 190302 - fuel…
- Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop
- ?The sunroof will not operate in either direction
- ?Unusual noises occur only when operating the steering column in the axial direction
- BMW AG has issued a Delivery Stop (effective February 9, 2023) on certain Model Year 2022 - 2023 BMW…
BMW AG has issued a Delivery Stop (effective February 9, 2023) on certain Model Year 2022 - 2023 BMW vehicles that were produced between June 29, 2022 and February 16, 2023.
- The air conditioning cycles from cold to warm air while driving or while at a stand still
The vent outlet temperatures vary by 25 degrees Fahrenheit or more (38 F to 60 F +) without changing any climate control settings.
NHTSA lists 128 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 M850I?
There are no owner complaints in the NHTSA data for this year; the data comes from 128 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2021 BMW M850I?
NHTSA lists 128 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 M850I 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.