2021 BMW X5 transmission & drivetrain problems

Related recalls

No recalls on file.

What owners say

1. Filed Oct 7, 2026NJTransmission & Drivetrain

   Description of Safety Concern: I am writing to formally submit a vehicle safety complaint regarding the xDrive transfer case on my 2021 BMW X5. While driving, the vehicle exhibits noticeable hesitation, shuddering, and jerking during acceleration at lower speeds and when executing tight turns. This erratic power delivery creates a potential safety hazard, particularly when accelerating into traffic, merging onto highways, or pulling out from intersections, as the momentary…

   NHTSA complaint #11769659 · source
2. Filed Sep 28, 2026CAOther / UnknownTransmission & Drivetrain

   Problem with starter. They don’t start from first time, sometimes from 2-3. As I’m check it in forums, it can burn another parts and make fire. As i now bmw x5 from 2019 to 2024 have problem with starter and have opened recall for it. But when I’m visit now service center, they say me that my vin number not selected for starter recall and I must contact you first.

   NHTSA complaint #11767455 · source
3. Filed Sep 23, 2026FLElectrical SystemEngineTransmission & Drivetrain

   My 2021 BMW X5 xDrive40i intermittently fails to start, occurring on approximately 80% of start attempts, and displays the message "Repeat Start Attempt." This has been confirmed by code reading to be a starter-related malfunction. This defect significantly affects vehicle reliability and raises a potential safety concern. BMW previously recalled vehicles equipped with similar starter motors due to starter solenoid defects that could cause overheating, electrical short…

   NHTSA complaint #11766408 · source
4. Filed Sep 21, 2026TNElectrical SystemTransmission & Drivetrain

   My 2021 BMW X5 xDrive40i Sport (112,000 miles) intermittently fails to start, occurring on approximately 80% of start attempts, and displays the message "Repeat Start Attempt." The issue first occurred on September 8, 2026, while the vehicle was parked at my residence and was confirmed by BMW Roadshow Memphis on September 11, 2026, as a starter-related malfunction. The dealer quoted more than $1,600 to replace the starter motor because the vehicle is outside the warranty…

   NHTSA complaint #11765823 · source
5. Filed Aug 20, 2026NVBrakesDriver Assistance & Safety TechTransmission & Drivetrain

   We live in [XXX]. We own a 2021 BMW X5-45e. It has about 85,000 miles and has always been serviced by the BMW dealer here in [XXX] – Pierce BMW. On the evening of XXX I drove the vehicle home at 6:30PM after a 30 mile drive and parked the car outside in the shade of our house. The temperature at the time was approx. 95 degrees F. At 6:45PM we left the house and drove on the freeway and city streets of [XXX] about 8-10 miles to see a concert in downtown [XXX]. The temperature…

   NHTSA complaint #11758372 · source
6. Filed Aug 12, 2026LAEngineSuspensionTransmission & Drivetrain

   The front driveshaft universal joint failed causing the drive shaft to bust a hole in the engine and crack the transmission. There was no knocking noise prior to failure. It suddenly failed, disengaged and caused damage. I was told by service manager the u-bolt must have been defective to have failed without warning.

   NHTSA complaint #11756576 · source
7. Filed Jul 10, 2026TNSteeringTransmission & Drivetrain

   I am reporting a front differential/front drive axle failure and a separate steering wheel/steering column adjustment issue. The vehicle was brought to an independent BMW/German repair shop for a routine oil change/inspection. The shop advised me that the front differential/front drive axle assembly had failed or was severely damaged and needed repair/replacement. The vehicle/component is currently at the shop and should be available for inspection upon request. I am…

   NHTSA complaint #11749496 · source
8. Filed May 20, 2026MDTransmission & Drivetrain

   The vehicle’s rear differential has developed significant internal "play" (excessive clearance between gears). This defect manifests as abnormal vibration and inconsistent power delivery to the wheels. The vehicle was inspected by an authorized BMW Technician at Passport BMW . Although I reported hitting a curb (low-speed impact), the official diagnostic report from the BMW Technician explicitly stated that the curb impact did not cause the differential failure. The…

   NHTSA complaint #11738996 · source
9. Filed May 15, 2026NCElectrical SystemEngineTransmission & Drivetrain

   2021 BMW X5 xDrive45e PHEV, built October 2020 by BMW AG (Germany). In-service Oct 28, 2021. Vehicle intermittently shows "Drivetrain Malfunction — you can continue driving" warning. DME scan reveals 5 fault codes, all for the conventional 12V pinion starter: 21A50A — Pinion starter: timeout occurred several times in succession 21A511 — Pinion starter: timeout 21611A — Pinion starter: starting torque could not be built up; high counter torque and/or undervoltage 216119 —…

   NHTSA complaint #11738107 · source
10. Filed Apr 30, 2026TNDriver Assistance & Safety TechTransmission & Drivetrain

    Front Differential - Repair/Replacement on 2021 BMW X5 M50i. Extreme safety issue. Ironically failed right after 50k warranty. Currently at 50742 miles. Brought vehicle in 6 different occasions in the last year and a half. One time for a similar issue (approx. 1 year ago) and instead of addressing the problem at the time they just replaced the transfer case, masking the root issue and pending complete failure of the system.

    NHTSA complaint #11734778 · source
11. Filed Dec 15, 2025NYTransmission & Drivetrain

    I am writing to formally file a complaint and request an expansion of recall coverage regarding a starter motor failure on my 2021 BMW X5, which occurred at approximately 38,000 miles. Recently, my vehicle experienced a sudden failure to start. After inspection, the issue was diagnosed as a starter malfunction. I am aware that BMW has issued a recall addressing starter-related defects for certain vehicles of the same model year and configuration. However, I was informed that…

    NHTSA complaint #11705036 · source
12. Filed Nov 28, 202536,400 miNJTransmission & Drivetrain

    The contact owns a 2021 BMW X5. The contact stated that while driving at various speeds, there was an abnormal grinding and clanking sound coming from the front end of the vehicle. The vehicle was taken to the local dealer, where it was diagnosed that the front differential was faulty and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 36,400.

    NHTSA complaint #11701920 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology