2025 Bmw 840i problems, complaints & recalls
Most-reported problem areas: Forward Collision Avoidance: Automatic Emergency Braking (1)
Safety recalls (2)
Power Train:driveline:driveshaft 2026-08-12 · campaign 26V525000 · 36,823 vehicles
Defect: 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.
Fix: 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 NHTSA.gov beginning October 2, 2026.
Electrical System:starter Assembly 2025-09-25 · campaign 25V644000 · 145,102 vehicles
Defect: BMW of North America, LLC (BMW) is recalling certain 2020 340I, X6, 2020-2025 840I, 2020-2022 740LI, 2019-2020 X7, and X5 vehicles. After repeated attempts, the starter motor may overheat from an electrical overload.
Risk: An overheated starter motor can ignite nearby combustible material in the engine compartment, increasing the risk of a fire.
Fix: Dealers will replace the engine starter, free of charge. This recall includes vehicles repaired under recall 24V576 and those owners will need to have their vehicle repaired again. Owner notification letters were mailed February 9, 2026. Owners may contact BMW customer service at 1-800-525-7417. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov November 17, 2025.
Service bulletins (5)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Engine 2026-05-06 · B010126 · Warranty Program/Extension
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.
Unknown Or Other 2026-03-16 · B650426 · Service Bulletin/Repair Instructions
customers may report issues with the alarm system not functioning correctly. these concerns may includeone or more of the following: missing confirmation sound (function cannot be selected or deselected in the central informationdisplay (cid) menu). alarm system deactivated (interior mirror light of
Seats 2025-08-21 · B521125 · Service Bulletin/Repair Instructions
if the seat ventilation is deactivated via the switch or due to parking the vehicle, the fans in the seat cushionor under the seat cushion surface are unpleasantly loud. the fans speed up loudly twice and then turn off. the functionality of the fans is not impaired. this behavior only occurs after t
Power Train 2025-06-06 · B270220 · Service Bulletin/Repair Instructions
there is a jerking or shuddering during either or both of the following: cornering or accelerating from low speeds driving with low to medium loads
Electrical System 2025-02-28 · B520525 · Service Bulletin/Repair Instructions
the customer states: the driver’s seat will not return to its last saved position. no seat memory. the heated seats settings in the menu are missing/different than in their previous bmw vehicle. they canno longer select, under the climate rules, at what temperature fahrenheit the heated seats willau
What owners report
2026-10-22 · Forward Collision Avoidance: Automatic Emergency Braking · 17,000 mi“the contact owns a 2025 bmw 840i. while driving approximately 40–50 mph, the vehicle experienced phantom braking. the contact suffered shoulder and neck pain but had not sought medical attention. the failure had occurred twice. the manufacturer was notified of the failure by phone. the failure mileage was approximately 17,000.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.