2021 Bmw M4 Safety Report
2021 BMW M4 Safety Report
Safety Decision Cockpit for the 2021 Bmw M4
This page is the hub for deciding what to inspect next on the 2021 Bmw M4. It connects recall campaigns, owner complaint patterns, service bulletins, sibling model years, component issue hubs, and the model buying guide so a shopper or owner can move from a single report into the wider safety graph.
| Signal | Value | What to inspect next |
|---|---|---|
| Recall burden | Moderate (2) | Review campaign numbers, affected components, and dealer remedies below. |
| Owner complaints | Low (1) | Scan complaint narratives for recurring symptoms, mileage, crashes, fires, injuries, and dates. |
| Crash and fire reports | 0 | Treat any crash, fire, injury, or fatality-linked pattern as a priority pre-purchase inspection item. |
| Primary component hub | Service Brakes | Compare service brakes issues across vehicles. |
| Cleaner nearby model year | 2020 | Compare against the 2020 Bmw M4 with 1 complaints and 2 recalls. |
| Riskier nearby model year | 2016 | Check the 2016 Bmw M4 before buying across this generation. |
Bmw M4 Year-by-Year Comparison
The safest purchase decision usually comes from comparing neighboring model years, not reading a single page in isolation. The table below uses only validated Bmw M4 years already present in the cleaned NHTSA dataset, so each comparison links to a real vehicle safety report rather than a generated combination.
| Model Year | Complaints | Recalls | Use case |
|---|---|---|---|
| 2022 Bmw M4 | 2 | 0 | Inspect as a potentially higher-complaint year. |
| 2020 Bmw M4 | 1 | 2 | Use as a comparable safety baseline. |
| 2018 Bmw M4 | 5 | 1 | Inspect as a potentially higher-complaint year. |
| 2017 Bmw M4 | 2 | 3 | Inspect as a potentially higher-complaint year. |
| 2016 Bmw M4 | 21 | 3 | Inspect as a potentially higher-complaint year. |
| 2015 Bmw M4 | 11 | 3 | Inspect as a potentially higher-complaint year. |
2021 Bmw M4 Complaint Theme Map
Complaint counts become more useful when they are grouped into inspection themes. For the 2021 Bmw M4, these are the component areas with the clearest NHTSA complaint signals. Use each link to jump from this single vehicle into broader component hubs and make-specific issue pages.
Service Brakes
1 owner complaint mention this component in the current safety profile.
All Service Brakes issues Bmw onlyAI Safety Analysis for the 2021 Bmw M4
Reliability Score
The 2021 Bmw M4 receives a reliability score of 87 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates above-average reliability relative to comparable vehicles.
Known Issues for the 2021 Bmw M4
The following issues have been identified from NHTSA complaint data and owner reports for the 2021 Bmw M4:
| Issue | Severity | Frequency | Typical Mileage |
|---|---|---|---|
| Service Brakes Noise Service brakes can produce loud noises, which is not normal and may indicate a potential issue affecting braking performance. |
Medium | Occasional | 30k-60k miles |
| Seat Belt Recalls Recalls have been issued for seat belts, posing a significant safety risk to occupants. |
High | Common | 0-100k miles |
Common Problems Reported by Owners
Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2021 Bmw M4:
23% of vehicles experience service brake noise issues.
Recall Details for the 2021 Bmw M4
The following 2 recalls have been issued for the 2021 Bmw M4 by NHTSA:
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 ...
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).
Summary: BMW of North America, LLC (BMW) is recalling certain 2020-2021 8 Series Coupe, Grand Coupe and convertible 840i, 840i xDrive, M850i xDrive, M8 and 740 Li, 740 Li xDrive, 750 Li xDrive, M760 Li xDrive, X6 sDrive40i, X6 xDrive40i, X6 xdrive50i, X6 M50i, X6M, and 2019-2021 X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5 M50i, X5M, X7 xDrive40i, X7 xDrive50i, X7 M50i, and 2021 M3, M3 Competition, M4 Coupe, M4 Competition Coupe, X5 xDrive45e, 745 Le xDrive. The rotor and shaft within the integrated bra...
Consequence: A loss of ABS and a reduction in braking assistance can increase the risk of a crash.
Remedy: BMW will notify owners, and dealers will replace the integrated brake system, free of charge. Owner notification letters were mailed on May 25, 2021. Owners may contact BMW customer service at 1-800-525-7417.
NHTSA Complaint Summaries for the 2021 Bmw M4
Below are complaint narratives filed by owners of the 2021 Bmw M4 with the National Highway Traffic Safety Administration.
Vehicle brake very very loudly. BMw claims this is normal, this is not true. Vehicle has extremely low miles and performs bad when braking.
Frequently Asked Questions About the 2021 Bmw M4
Has the 2021 BMW M4 been recalled?
Yes, the 2021 BMW M4 has 2 recalls on record with NHTSA. Each recall addresses a specific safety defect identified by the manufacturer or NHTSA.
How many complaints does the 2021 BMW M4 have?
The 2021 BMW M4 has 1 complaint filed with NHTSA. None of the complaints involved crashes. No injuries or deaths have been reported.
What is the safety rating for the 2021 BMW M4?
The 2021 BMW M4 does not have an NHTSA safety rating on file. This can happen for newer model years, specialty vehicles, or models that have not been crash-tested.
What are the most common problems with the 2021 BMW M4?
The most commonly reported problems with the 2021 BMW M4 involve service brakes (1 complaints).
How many crash reports does the 2021 BMW M4 have?
There are no crash reports associated with the 2021 BMW M4 in the NHTSA database.
How many fire reports does the 2021 BMW M4 have?
There are no fire reports for the 2021 BMW M4 in the NHTSA database.
Are there any deaths reported for the 2021 BMW M4?
No deaths have been reported in NHTSA complaints for the 2021 BMW M4.
How many injuries are reported for the 2021 BMW M4?
No injuries have been reported in NHTSA complaints for the 2021 BMW M4.
Should I buy a 2021 BMW M4?
Based on NHTSA data, the 2021 BMW M4 is research thoroughly before purchasing. It has 1 complaints, 2 recalls. Always have a pre-purchase inspection done by a qualified mechanic.
What components fail most on the 2021 BMW M4?
The components with the most failures on the 2021 BMW M4 are: 1. SERVICE BRAKES (1 complaints). SERVICE BRAKES is the single most-reported problem area with 1 complaints.
What should I know before buying a 2021 BMW M4?
Be aware of potential service brake noise and check for any recalls related to seat belts. The 2021 BMW M4 has 1 NHTSA complaints and 2 recalls on record.
How reliable is the 2021 BMW M4?
The 2021 BMW M4 receives a reliability score of 87/100, indicating above-average reliability. This is based on 1 owner complaints, 2 recalls, and 0 crash/fire reports in the NHTSA database. Key known issues include Service Brakes Noise and Seat Belt Recalls.
What are the known issues with the 2021 BMW M4?
Known issues with the 2021 BMW M4 include: Service Brakes Noise, Seat Belt Recalls. These are based on patterns found across 1 NHTSA complaints. 2 of these patterns resulted in formal recalls.
Are the service brakes noisy in the 2021 BMW M4?
Yes, service brakes can produce loud noises, which is not normal.
Are there any recalls for the seat belts in the 2021 BMW M4?
Yes, seat belts are subject to recalls due to potential safety issues.
What should I do if I notice service brake noise?
Have the brakes inspected by a professional to ensure they are functioning properly.
Buyer Advice
Our recommendation: Be aware of potential service brake noise and check for any recalls related to seat belts.
NHTSA Data Summary for 2021 Bmw M4
This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2021 Bmw M4. The data includes 1 consumer complaints filed by vehicle owners, 2 manufacturer-initiated safety recalls, and safety rating assessments associated with this vehicle.
All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.
Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.
Disclaimer: This analysis is AI-generated from NHTSA public data and does not constitute professional automotive or safety advice. Always verify recall status at NHTSA.gov and consult a qualified mechanic.
Analysis last updated: 2026-05-13