MYMODEL YEARFACTS

Audited US model-year file

2021 BMW Z4

Exact make, model and year evidence from official US sources. Recall campaigns, ODI investigations, complaint allegations and EPA estimates remain separate.

Check this car’s VIN on NHTSA ↗Official NHTSA recall search ↗Compare every Z4 yearSearch the safety evidence indexCompare or research another model
Model-year evidence is not a VIN check.

A campaign may cover only certain production dates, plants or equipment. A zero result here is not safety clearance. Use NHTSA’s official VIN tool for the individual vehicle.

Official VIN lookup ↗

01 · Safety actions first

5 NHTSA recall campaigns

Exact model-level NHTSA results for 2021 BMW Z4. Campaign records are official safety actions; applicability to a particular car still requires its VIN.

01
NHTSA Recalls · US · received 2021-07-21

SEAT BELTS

Campaign 21V554000 ↗
Summary

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."

Consequence

During a crash, a seat belt retractor that does not function as intended increases the risk of injury.

Remedy

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).

02
NHTSA Recalls · US · received 2020-11-12

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

Campaign 20V700000 ↗
Summary

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.

Consequence

The failed weld may allow fuel to leak, increasing the risk of a fire in the presence of an ignition source.

Remedy

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.

03
NHTSA Recalls · US · received 2021-08-02

ENGINE

Campaign 21V598000 ↗
Summary

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.

Consequence

Loss of braking assist can increase the risk of a crash.

Remedy

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.

04
NHTSA Recalls · US · received 2025-09-23

ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY

Campaign 25V636000 ↗

Urgent NHTSA flag: park outside. Confirm current instructions using the official campaign and VIN lookup.

Summary

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.

Consequence

A short circuit in the starter relay may increase the risk of a fire.

Remedy

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.

05
NHTSA Recalls · US · received 2026-01-30

ELECTRICAL SYSTEM:STARTER ASSEMBLY

Campaign 26V056000 ↗
Summary

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.

Consequence

Fire increases the risk of injury.

Remedy

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.

02 · Owner allegations

1 NHTSA complaints

Counts are not adjusted for sales, vehicle age, mileage, publicity or reporting behavior. They are allegations, not defect findings or a reliability score.

Crash mentions
0
Fire mentions
0
Injuries reported
0
Most-reported component labels
UNKNOWN OR OTHER1
Complaints across nearby BMW Z4 model years

Totals for the same nameplate, scaled against its highest year here. They are not adjusted for how many were sold, how old they are, how far they are driven, or how much publicity a fault received — an older or better-selling year will usually carry more reports. This shows where the reporting sits, not which year is better.

  1. 52019
  2. 52020
  3. 12021
  4. 12022
  5. 02023
  6. 02024

A dash means NHTSA holds no complaint record for that exact year, make and model. See all Z4 years with specs and fuel economy →

03 · Agency review

0 NHTSA ODI investigations

An investigation means ODI reviewed a possible safety issue for this exact model-year identity. Opening one is not a defect finding; closing one does not by itself clear a vehicle.

VERIFIED EMPTY IMPORT SNAPSHOT

No exact NHTSA ODI investigation row was matched.

The checked bulk snapshot returned zero investigation action numbers for 2021 BMW Z4. That is source coverage, not proof that no issue exists or will be investigated later.

04 · EPA configurations

Fuel economy & specifications

FuelEconomy.gov records are summarized as ranges where this model name has multiple engines, drivetrains or trims.

EPA configurations
2
Combined economy
25–28 mpg/MPGe
City / highway
22–25 / 30–32 mpg/MPGe
Engine displacement
2–3 L
Cylinders
4–6
Fuel type
Premium
Drive
Rear-Wheel Drive
Vehicle class
Two Seaters
Annual fuel-cost estimate
$2850–3200

05 · Evidence strength

Exact identity. Explicit limits.

No opaque score. Evidence strength is expressed through source availability, exact match method, jurisdiction and honest empty states.

exact match

Recall campaigns

5 exact US model-year records in this bounded view.

exact match

Complaints

1 exact US model-year allegations; narratives and VIN fragments are omitted.

verified empty

ODI investigations

0 exact US model-year action numbers in the approved import snapshot.

canonical only

Model aliases

Only the exact NHTSA vPIC model name is published; unverified aliases are not merged.

not published

Manufacturer ownership

No rights-reviewed official ownership record is joined to this exact model-year.

PUBLIC EVIDENCE PASSPORT

Identity, freshness and provenance.

The canonical URL is this file’s permanent public identifier. Source IDs and timestamps show exactly what was matched and when; they do not turn the evidence into a verdict.

Permanent public ID
https://modelyearfacts.com/vehicle/2021/bmw/z4
NHTSA make ID
452
NHTSA model ID
1725
Match key
2021 · BMW · Z4 · US
Live evidence requested
EPA publication catalogue
Complaint matrix snapshot
Imported safety snapshot
nhtsa-investigations · verified empty

NHTSA ODI investigations

Action number, component, subject and open/close dates from the approved bulk import; long summaries omitted.

Open official source ↗
US-market boundary

Only NHTSA vPIC, NHTSA ODI complaints and investigations, NHTSA recalls and FuelEconomy.gov contribute to this vehicle claim. CPSC equipment notices are searched separately and never joined to vehicle fitment. UK MOT, Canadian, New Zealand and European records are not merged into this US claim.

06 · Research paths

Diagnose first. Confirm fitment.

These are transparent searches, not diagnoses or endorsed parts. Recall remedies come before purchases; exact part fitment requires VIN, trim, powertrain, production date and OE number.

Offers status: held

Awin US and R2 affiliate inventory are not published until a US programme, merchant and exact-fitment projection are approved. No offer currently has both merchant approval and exact vehicle fitment, so commercial links never count as evidence.

Same nameplate

Other BMW Z4 years.

See every Z4 year side by side →

2026BMW Z4Open file →2025BMW Z4Open file →2024BMW Z4Open file →2023BMW Z4Open file →2022BMW Z4Open file →2020BMW Z4Open file →2019BMW Z4Open file →2016BMW Z4Open file →2015BMW Z4Open file →2014BMW Z4Open file →2013BMW Z4Open file →2012BMW Z4Open file →

Same make and year

Other 2021 BMW models.

2021BMW 228iOpen file →2021BMW 230iOpen file →2021BMW 330eOpen file →2021BMW 330iOpen file →2021BMW 430iOpen file →2021BMW 530eOpen file →2021BMW 530iOpen file →2021BMW 540iOpen file →