5 recalls and 1 owner complaint on file with NHTSA for the 2021 BMW Z4.
5
recalls
1
owner complaints
0
complaints mentioning a crash
0
mentioning a fire
Recalls apply to specific production ranges. To see whether a particular car still has an open recall, enter its VIN at nhtsa.gov/recalls. Repairs for safety recalls are free at authorised dealers.
2021 BMW Z4 recalls
Electrical system: starter assembly
NHTSA campaign 26V056000 · reported January 30, 2026 · BMW of North America, LLC · 87,394 vehicles potentially affected
The problem
BMW of North America, LLC (BMW) is recalling certain 2021-2023 Toyota Supra, 2022-2023 2 Series Coupe, 2021-2024 5 Series (xDrive), 2021-2022 Z4, 2022-2024 4 Series (Gran Coupe), 2021-2024 4 Series (Convertible and xDrive Convertible), 2021-2023 4 Series (Coupe), 2021-2024 3 Series, 2021-2023 X4, 2021-2024 X3 vehicles. Please see the recall report for a complete list of all models. The engine starter may overheat and catch fire due to wear on an internal component.
The risk
Fire increases the risk of injury.
The fix
Dealers will replace the engine starter, free of charge. Owner notification letters were mailed July 21, 2026. Owners may contact BMW customer service at 1-800-525-7417 or Toyota's customer service at 1-800-331-4331. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning March 24, 2026.
Electrical system: starter assembly, relay
NHTSA campaign 25V636000 · reported September 23, 2025 · BMW of North America, LLC · 199,674 vehicles potentially affected
The problem
BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles. The engine starter relay may corrode, causing the relay to overheat and short circuit.
The risk
A short circuit in the starter relay may increase the risk of a fire.
The fix
Owners are advised to park their vehicles outside and away from structures until the remedy is complete. Dealers will replace the engine starter, free of charge. Owner notification letters were mailed February 6, 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 14, 2025.
Engine
NHTSA campaign 21V598000 · reported August 2, 2021 · BMW of North America, LLC · 50,024 vehicles potentially affected
The problem
BMW of North America, LLC (BMW) is recalling certain 2020 M340i, M340i xDrive, 540i, 540i xDrive, X3 M40i, 2020-2021 X4 M40i, 745Le xDrive, 2019-2021 Z4 M40i, and 2020-2021 Toyota Supra vehicles. During engine start, the engine management software may cause loss of braking assist. Full mechanical braking (without assist) remains available.
The risk
Loss of braking assist can increase the risk of a crash.
The fix
Dealers will update the engine management software, free of charge. Owner notification letters were mailed on September 17, 2021. Owners may contact BMW customer service at 1-800-525-7417.
Seat belts
NHTSA campaign 21V554000 · reported July 21, 2021 · BMW of North America, LLC · 21,537 vehicles potentially affected
The problem
BMW of North America, LLC (BMW) is recalling certain 2021 2 Series (230i, 230i xDrive, M240i, M240i xDrive), 330e, 330e Xdrive, 4 Series Coupe (430i, 430i xDrive, M440i xDrive) M4 Coupe, M4 Competition Coupe, BMW 4 Series Convertible (430i, M440i), BMW X1 sDrive28i, xDrive28i, 2 Series Gran Coupe (228i, 228i xDrive, M235i xDrive), M2 Competition Coupe, 330i, 330i xDrive, M340i, M340i xDrive, M3, M3 Competition, 530i, 530i xDrive, 540i, 540i xDrive, MINI Hardtop 2 Door (Cooper, CooperS, JCW), X2 sDrive28i, X2 xDrive28i, X2 M35i, Z4 sDrive30i, Z4 M40i, MINI Hardtop 2 Door (Cooper SE), MINI Convertible (Cooper, Cooper S, JCW), MINI Clubman (Cooper S, Cooper S All4, JCW), MINI Countryman (Cooper, Cooper All4, Cooper S, Cooper S All4, JCW All4), Rolls Royce Ghost, MINI Countryman (Cooper S E All4), Rolls Royce Phantom, Rolls Royce Cullinan, and Toyota Supra vehicles. The passenger seat belt Automatic Locking Retractor (ALR) may deactivate early, before the webbing fully retracts. As such, these assemblies fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
The risk
During a crash, a seat belt retractor that does not function as intended increases the risk of injury.
The fix
Dealers will inspect the seat belt retractors (including the seat belts) and, if necessary, replace the retractors, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact BMW customer service at 1-800-525-7417; 1-866-825-1525 (MINI); 1-877-877-3735 (Rolls Royce); and 1-888-270-9371 (Toyota).
Fuel system, gasoline: storage, tank assembly
NHTSA campaign 20V700000 · reported November 12, 2020 · BMW of North America, LLC · 49 vehicles potentially affected
The problem
BMW of North America, LLC (BMW) is recalling certain 2020-2021 Z4 and 2020-2021 Toyota Supra vehicles. The weld between the fuel tank halves may have been insufficiently welded, causing the weld to fail.
The risk
The failed weld may allow fuel to leak, increasing the risk of a fire in the presence of an ignition source.
The fix
BMW will notify owners, and dealers will replace the fuel tank, free of charge. The recall began December 18, 2020. Owners may contact BMW customer service at 1-800-525-7417 or Toyota customer service at 1-888-270-9371.
Most reported problems
Areas named in owner complaints to NHTSA. One complaint can name several areas.
Unknown or other1
What owners report
Recent complaints filed with NHTSA, shortened. These are unverified accounts from owners, not findings.
Jul 30, 2026 · Unknown or other
There is a strong chemical smell when the AC is turned on and the system is loosing refrigerant. There is a common issue on these cars of premature evaporative core corrosion.
Across all years, the 2003 Z4 has the most complaints (414). All BMW Z4 years →
Questions
Does the 2021 BMW Z4 have any recalls?
Yes. NHTSA lists 5 recalls for the 2021 BMW Z4, the most recent reported on January 30, 2026 (Electrical system: starter assembly). Check a specific car by its VIN at nhtsa.gov/recalls.
What are the most common problems with the 2021 BMW Z4?
Owners have filed 1 complaint with NHTSA. The most frequently reported area is unknown or other (1 complaints).
How many 2021 BMW Z4 complaints mention a crash or fire?
0 of 1 complaints report a crash and 0 a fire; 0 injuries were reported in total. Complaints are unverified reports from owners.
Source: NHTSA recall and complaint data, updated October 27, 2026. Latest complaint received July 30, 2026.