Owners have filed 1 complaints on the BMW M850i, covering 2020–2020. The system named most often is Power Train (1 reports). Worst years by volume: 2020; cleanest: 2020. On average the car was 5.0 years old when the problem happened.
What breaks on BMW M850i
Grouped by the system owners named — percentages are shares of all 1 M850i complaints. Open any row for the full reports in owners' own words.
Power Train 1 Read
Fuel pump failed within a minute of initial warning and performance indicating a problem. While driving ~60 mph on the highway, available power dropped to zero within a couple tenths of a mile, *barely* allowing me to move to the shoulder. Screen error/fault indicated vehicle was ok to keep driving but to schedule…
M850i years to avoid — and the clean ones
Complaints per model year. More reports usually means more cars on the road as well as more trouble, so read the crash and fire columns alongside the count.
| Model year | Complaints | Top system | Crashes | Fires |
|---|---|---|---|---|
| 2020 | Power Train | — | — |
Owners reported these. Find out if yours is one of them.
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How we count
Every figure here comes from complaints owners filed with NHTSA — 1,100,006 of them, covering 1,982 models built between 1981 and 2026.
A complaint is an unverified report: someone wrote down what happened to their car. It is not a confirmed defect and not a recall. What makes the volume useful is the pattern — when thousands of owners of the same build describe the same failure, that is a signal no marketing brochure will give you.
Two things we do that the source does not. First, we compute the age of the car at the moment of failure from the incident date and the model year. Second, we group complaints by the first 11 characters of the VIN — the production series — so a bad plant run does not disappear into a model-wide average.
Frequently asked questions
What are the worst years for the M850i?
By complaint volume, 2020 drew the most owner reports. Bear in mind that popular years put more cars on the road, so check the crash and fire columns too.
Which M850i years are the cleanest?
2020 have the fewest complaints on file. For recent years that can simply mean the cars are young.
How many complaints does the BMW M850i have?
1 owner complaints filed with NHTSA, covering 2020–2020. Of those, 0 describe a crash and 0 a fire.
Are these complaints verified?
No. They are unverified reports from owners. NHTSA publishes them as filed and investigates only a fraction. The value is in the pattern, not in any single report.
Can I check complaints for one specific car?
Yes — enter its VIN above. We match the first 11 characters, which identify the plant, year, body and engine, so you get complaints on that exact production series rather than the whole model.