2021 BMW 540I

9 complaints on file, page 1 of 1.

1. Filed Sep 21, 2026Failure Sep 2, 2026St. Petersburg, FLPower train

   In August 2026, the National Highway Traffic Safety Administration announced an active safety recall under campaign number 26V525000 for certain 2021–2023 BMW vehicles experiencing severe driveshaft-to-rear-differential connection failures that result in an immediate loss of motive power and vehicle rollaway risks. Shortly after this announcement, my 2021 BMW 540i (VIN: [XXX]) suffered this exact catastrophic mechanical failure while in motion, completely disabling the vehicle and creating an imminent safety hazard in live traffic. The vehicle was towed directly to Bert Smith BMW in St. Petersburg, Florida, where a certified technician formally diagnosed the severed components and ordered a replacement driveshaft assembly.Despite the vehicle exhibiting the identical mechanical failure mechanism and falling squarely within the impacted model year production pool under federal investigation, BMW Corporate denied all warranty coverage and goodwill assistance on the basis that this specific VIN was not yet explicitly listed in the initial recall batch. As a direct result of the manufacturer's denial, I was forced to pay entirely out of pocket for the mandatory parts and labor to restore the vehicle to a safe operating condition. The failed physical components have been requested for preservation, and this documented financial injury has been submitted alongside a formal safety complaint to federal investigators to mandate a retroactive expansion of the recall parameters for full financial reimbursement. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11765993
2. Filed Jul 10, 2026Failure May 26, 2026Upper Marlboro, MDElectrical system, Engine, Power train

   Starter engine failure. Car failed to start multiple times. Major safety hazard that can cause a short circuit, melt wiring harnesses, and spark an engine bay fire posing an immediate threat to life. Problem was inspected and confirmed by a dealer. Multiple waring lamps and messages appeared. Dealer report stated: STARTER MOTOR FAULTY. ENGINE ELECTRICAL SYSTEM CONCERN: C/S: REPEAT START ATTEMPT INTERMITTEN WARNING LIGHTS. Please issue recall for the safety of all drivers.

   NHTSA complaint 11749530
3. Filed Mar 25, 2026Failure Mar 22, 202666,700 milesAlhambra, CAPower train

   The contact owns a 2021 BMW 540I. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. There was an abnormal sound coming from the vehicle before the vehicle lost motive power. No warning lights were illuminated. The contact stated that the vehicle failed to respond while in drive(D) or reverse(R). The vehicle was towed to the dealer, where it was diagnosed with a driveshaft failure. The contact was informed that the driveshaft needed to be replaced. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 21V046000 (Power Train); however, the VIN was not associated with the recall. The manufacturer was made aware of the failure. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 66,700.

   NHTSA complaint 11727007
4. Filed Feb 12, 2026Failure Nov 9, 2025Powder Springs, GAService brakes

   In November 2025 my breaks quit working. I had AAA haul my car to a repair shop. They ran the codes on the car and found that it was related to a recall on 2021 BMW 540i's for the oil vacuum pump assembly, pan and gasket. I then had it towed to BMW and found out that my vin was not in the recall. BMW quoted me $4587 to repair this on a car with 45,000 miles. I then had it towed to a repair shop that replaced the oil vacuum pump assembly, oil pan, gasket and bolts for about $3700. I think that my vin should have been included in the recall. It was a obviously a common problem with my model and I should not have to pay this much on a car with 45,000 miles. I also had to pay $283.81 for BMW to diagnose it.

   NHTSA complaint 11717479
5. Filed May 5, 2025Failure Apr 30, 2025Olathe, KSService brakes

   We notice the lose of braking power right after we started the car on 4/30 morning. The car was totally fine before that. took it to the BMW dealer they said the problem is "Vacuum/oil pump failing internally. fault for brake booster pressure switch, no brake boost" I find that there is a recall for the exact problem but it doesn't include my vehicle The "Part 573 Safety Recall Report 21V-598" stated that when It does happen it will cause damage to the oil/vacuum pump. I think recall 21V-598 should include my vehicle

   NHTSA complaint 11658906
6. Filed Jul 24, 2023Failure Jul 22, 2023Edina, MNAutomatic emergency braking, Warnings, Service brakesCrash

   Unintended car acceleration, with complete brake failure. No software warning icons in dash, no collision avoidance or ABS triggered even though car so equipped. Crashed into rear end of stationery vehicle,. [XXX] , MN police were called. Incident report # attached. (1st image) Western National Insurance Co. notified.Claim # attached (2nd image) Car will be inspected @ BMW dealership in Bloomington, MN 7/25/23. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint 11533979
7. Filed Oct 21, 2022Failure Oct 7, 202210,000 milesPhoenix, AZSeat belts

   The contact owns a 2021 BMW 540I. The contact stated that on multiple occasions, the front and rear passenger’s and driver’s side seat belts failed to detach after being connected. The contact stated that he forced the rear passenger’s side seat belt to detach with a screwdriver. No warning lights was illuminated. The vehicle was taken to the dealer where the dealer stated that candy was lodged in the buckle. The contact stated that the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 10,000.

   NHTSA complaint 11490291
8. Filed Oct 6, 2022Failure Sep 8, 2022Miami, FLSteering, Wheels

   Intermittent vibration at highway speeds. Brought to the BMW dealership and they stated the right front wheel was out of round. I never hit a pothole or anything that would cause damage. The dealer "repaired" the wheel, but the problem still exists. Brought the vehicle back and am now told that BMW has started offering non-run flat tires on new cars. I feel that the run flat tires coupled with the low-profile wheels could be the issue. Also, feel that the wheels are poorly made and are prone to being warped.

   NHTSA complaint 11488196
9. Filed Jan 28, 2022Failure Jan 28, 2022Atlanta, GA12v/24v/48v battery

   2021 BMW 540I. CONSUMER WRITES IN REGARDS TO MULTIPLE DEFECTS DUE TO BATTERY MANAGEMENT ISSUE. THE CONSUMER STATED THE VEHICLE HAS EXPERIENCED MULITPLE OCCASIONS OF FAILURES WITH THE BREAKING SYSTEM. THE DRIVER HAD TO PRESS THE PEDAL TO THE FLOOR IN ORDER TO STOP THE VEHICLE. THE EMERGENCY BRAKING SYSTEM ENGAGED WITHOUT WARNING, THE AUTOSTART ENGAGED INDEPENDTLY, AND LIGHTING/SPEAKER/SUNROOF MALFUNCTION.

   NHTSA complaint 11449238