The guibo (flex disc) in the powertrain has multiple visible cracks, posing a safety risk due to its potential to disrupt power transmission to the wheels. This malfunction could impact vehicle control, particularly at higher speeds, thus putting passengers and other road users at risk. A certified BMW service center has confirmed the problem, with BMW technicians recommending a replacement; however, both the dealer and BMW have declined to cover it under warranty. Although there were no warning lamps prior to the failure, slight vibrations or noises may have indicated an issue with the guibo. The attached image is the recommendation from the BMW service center however I declined to it repaired out of pocket.
The worst 2021 BMW M550I problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Transmission1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Transmission1
Recalls 3
Power train: driveline: driveshaft
- What is wrong
- BMW of North America, LLC (BMW) is recalling certain 2020-2026 840i, 840i xDrive, 2021-2023 540i, 540i xDrive, M550i xDrive, and 2024-2026 750e xDrive vehicles. The connection between the driveshaft and the rear differential may become damaged, possibly resulting in a loss of power to the rear wheels or a vehicle rollaway.
- Risk
- An unexpected loss of drive power can increase the risk of a crash. In addition, a damaged driveshaft can result in a vehicle rollaway if the parking brake is not applied, increasing the risk of a crash or injury.
- Remedy
- Dealers will inspect the connection between the driveshaft and rear axle differential, and apply adhesive or replace the driveshaft and rear axle differential, as necessary, free of charge. Owner notification letters were mailed October 8, 2026. Owners may contact BMW customer service at 1‑800‑525‑7417. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on beginning October 2, 2026.
Recall number 26V525000 · Recall details
Back over prevention: software
- What is wrong
- BMW of North America, LLC (BMW) is recalling certain 2019-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, X4 xDrive30i, X4 M40i, M550i, X4M, X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5M, X5 M50i, X7 xDrive40i, X7 xDrive50i, X7 M50i, Alpina XB7, 330i, 330i xDrive, M340i, M340i xDrive, and 8 Series Coupe, Convertible and Grand Coupe, 840i, 840i xDrive, M850i xDrive, M8, 2020-2021 530e, 530e xDrive, 330e, 330e xDrive, 745Le, 745Le xDrive, X5 xDrive45e, X3 xDrive30e, X6 sDrive40i, X6 xDrive40i, X6 xDrive50i, X6 M50i, X6M, 530i, 530i xDrive, 540i, 540i xDrive, M550i xDrive, M5, 740i, 740Li, 740Li xDrive, M760i Drive, M760Li xDrive, 750Li xDrive Alpina, Alpina B7 xDrive, and 2021 4 Series Coupe 430i, 430i xDrive, M440i xDrive vehicles. When shifting into Reverse, a small portion of the rearview image may be obscured, or the screen may not illuminate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
- 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.
- Remedy
- BMW will notify owners, and dealers will inspect the rearview camera software and update it if necessary, free of charge. The recall began April 16, 2021. Owners may contact BMW customer service at 1‑800‑525‑7417.
Recall number 21V096000 · Recall details
Back over prevention: sensing system: camera
- What is wrong
- BMW of North America, LLC (BMW) is recalling certain 2020-2021 X3 sDrive 30i, X3 xDrive 30i, X3M 40i, X3 xDrive 30e, X4 xDrive 30i, X4M 40i, 530i, 540i, 540i xDrive, M550i xDrive, M5, 550e, 550e xDrive, and 550e iPerformance vehicles. A small portion of the rearview image may be slightly obscured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
- 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.
- Remedy
- BMW will notify owners, and dealers will inspect and, if necessary, program the rearview camera with updated software. The recall began November 18, 2020. Owners may contact BMW customer service at 1‑800‑525‑7417.
Recall number 20V598000 · Recall details
Technical service bulletins for the 2021 BMW M550I 165
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- 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...
- One or more of the LED daytime running lights are dim or discolored.
- The basic conditions for initializing the power windows are not met.
- The electrical system of BMW vehicles has been subject to an ongoing development process over the last few...
- Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop
- ?A software error may
- ?Unusual noises occur only when operating the steering column in the axial direction.
- ?The front seat will not calibrate/initialize, and the stored faults cannot be deleted.
- ?The sunroof will not operate in either direction.
What 2021 BMW M550I owners say
Most recent owner complaints, unedited.
Compare the 2021 BMW M550I
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Questions about the 2021 BMW M550I
Is the 2021 BMW M550I reliable?
Owners have filed 1 complaint about the 2021 BMW M550I, fewer than a typical M550I model year.
What is the most common problem with the 2021 BMW M550I?
Transmission and drivetrain, with 1 complaint.
How many recalls does the 2021 BMW M550I have?
3 recalls, covering power train and back over prevention.
Was there a recall on the 2021 BMW M550I transmission?
Yes, 1 recall: 26V525000. Check your VIN to see if your car still needs the free repair.
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