no report yet
Driveline: driveshaft
NewRisk. An unexpected loss of drive power can increase the risk of a crash.
2020 BMW 840iProblems, recalls & complaints
NHTSA has logged 4 owner complaints about the 2020 BMW 840i, most often about the electrical system. It is covered by 6 safety recalls, and for recall 25V-644 the manufacturer reports only 74% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through August 12, 2026. Updated daily.
Complaints by system
Where the 2020 BMW 840i has problems
4 complaints grouped by the system owners reported.
1Electrical system
1Engine
1Service brakes, hydraulic
1Steering
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Electrical system | 1 | 0 |
| Engine | 1 | 0 |
| Service brakes, hydraulic | 1 | 0 |
| Steering | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
6 recalls
2020 BMW 840i 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
Electrical system: starter assembly
Risk. An overheated starter motor can ignite nearby combustible material in the engine compartment, increasing the risk of a fire.
repaired · 2026 Q2
Electrical system: starter assembly
Risk. A starter motor that overheats can ignite nearby combustible material in the engine compartment, 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.
Show 2 more recalls
repaired · 2023 Q1
Service brakes, hydraulic
Risk. A loss of ABS and a reduction in braking assistance can increase the risk of a crash.
repaired · 2022 Q1
Air bags
Risk. If the air bag and/or seat belt pretensioners deploy improperly in the event of a crash, there is an increased risk of injury to the driver and front passenger.
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
2020 vs. every other 840i 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 840i median. How we score
'19'20'21'22'23'24'25'26
- Avoid
- Caution
- Solid
- Best
- Not rated
In owners' words
What 840i owners report
Recent electrical system complaints filed with NHTSA, shortened. Personal details are removed.
My vehicle mileage was about 50,000 miles and well maintained by BMW dealership in my area. I was driving to work when suddenly my vehicle alerted me to a fault on display panel showing a power supply fault. The message said i should stop driving and call roadside assistance. The vehicle was towed…
Own a 2020 840i?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.