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2021 BMW M4 Report

Known issues, recalls, running costs, and what to check before you buy.

Updated Jun 4, 2026·Daniel Wilson·2 Critical Recalls
2021 BMW M4 Report

Overall Score

5.8/ 10
Our Verdict
High risk

Key Takeaways

  • The integrated brake system recall is a critical safety concern; verify its completion.
  • Seat belt retractors were also subject to recalls, impacting occupant safety.
  • While no complaints were logged, the recall history suggests potential component vulnerabilities.
  • Expect premium fuel requirements and consider the associated running costs.
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OverviewWho This Car Is ForReliability & ProblemsVehicle SpecsUnlock Full ReportFAQ
Overview

2021 BMW M4

The 2021 BMW M4 is a high-performance coupe that delivers exhilarating driving dynamics. For the used car shopper, understanding its mechanical intricacies and documented safety campaigns is crucial. While the absence of consumer complaints is noted, the vehicle has faced several recalls, particularly affecting the braking system and seat belts. These campaigns highlight potential manufacturing defects that warrant thorough pre-purchase inspection and verification of completed remedies.

Critical Failure Risk

A manufacturing defect in the weld of the integrated brake system's rotor and shaft can lead to a loss of ABS and braking assistance, particularly during hard braking. This is a critical safety concern.

Early detection can help you avoid a $1,500-$3,000 repair.

Open Maintenance Analysis →

Safety & Bulletins

Open Recalls5
Service Bulletins0
Full Recall History →

Owner Complaints

0

No primary complaint themes found.

Detailed Issue Breakdown →

Performance & Efficiency

Fuel Efficiency
Combined
19
MPG
City
16
MPG
Highway
23
MPG
Full Vehicle Specifications ↓

Reliability

8.1/ 10

Practicality

3.0/ 10

The score is mainly limited by high fuel consumption, and limited seating.

Buyer Fit

Who This Car Is For

Best for

Enthusiasts seeking a potent, rear-wheel-drive performance coupe.

+2 more buyer-fit notes in the full report

Avoid if

Drivers seeking a low-maintenance, budget-friendly daily driver.

+2 more buyer-fit warnings in the full report

2021 BMW M4 Reliability Analysis

Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 BMW M4.

  • Recall TimelineOfficial safety notices
  • Owner ComplaintsReal driver reports
  • Failure AnalysisKnown part defects
Specs

Vehicle Specs

Fuel Type
Premium
Seating Capacity
4
Transmission
Automatic
Drivetrain
Rear-Wheel Drive
Body Style
Coupe
EPA Combined MPG
19

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Most Common Issues

1. Integrated Brake System Failure

Most reported

Usage data observed

2. Seat Belt Retractor Malfunction

Usage data observed

See all common issues in the maintenance guide

First Service Interval

- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection

Est. shop cost: $250 - $450

10,000 mi

Unlock the full maintenance guide for every scheduled service interval and cost forecast.

Full pre-purchase inspection checklist
Complete maintenance schedule (3 service intervals)
Repair forecasts with mileage and cost context
Full buyer-fit guidance and who should avoid it
Full specs and trim-level context
5 recall campaign details & remedy notes
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FAQ

FAQ

Is the 2021 BMW M4 reliable?▾

The CarFocal Reliability Score for the 2021 BMW M4 is 8.1/10. Reliability score is 8.1/10. NHTSA recalls: 5. Owner complaints: 0.

How practical is the 2021 BMW M4 for daily use?▾

Practicality score is 3.0/10. The score is mainly limited by high fuel consumption, and limited seating. EPA combined economy is 19 MPG. Seating capacity is 4.

What is the overall score for the 2021 BMW M4?▾

The CarFocal Overall Score for the 2021 BMW M4 is 5.8/10. Overall score is 5.8/10 (Mixed). Confidence 55%. Maintenance 7.4/10. Practicality 3.0/10.

What does it cost to own and maintain a 2021 BMW M4?▾

Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake System Inspection at 10,000 miles. Estimated first-year maintenance: $800 - $1,500. Repair prediction highlight: Integrated Brake System (estimated cost Min: $1500 • Max: $3000).

What engine is in the 2021 BMW M4?▾

Engine specs list 6 • 3.0.

What transmission does the 2021 BMW M4 use?▾

According to CarFocal's specs for the 2021 BMW M4, transmission is Automatic. The paired drivetrain is Rear-Wheel Drive.

Does the 2021 M4 require Premium gas?▾

Manufacturer fuel recommendation: Premium.

What is the combined EPA MPG for the 2021 BMW M4?▾

EPA combined estimate is 19 MPG.

What driver assistance and safety features are available on the 2021 BMW M4?▾

11 standard and 1 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.

How many people fit in a 2021 BMW M4?▾

According to CarFocal's specs for the 2021 BMW M4, seating capacity is 4.

What body style is the 2021 BMW M4?▾

According to CarFocal's specs for the 2021 BMW M4, body style is coupe.

What drivetrain does the 2021 BMW M4 use?▾

According to CarFocal's specs for the 2021 BMW M4, drivetrain is Rear-Wheel Drive. Transmission is Automatic.

Are there open safety recalls on the 2021 BMW M4?▾

This model year has 5 official safety campaigns listed.

Start Here

Maintenance guide

Costs + intervals

Recall report

Campaigns + remedy notes

Owner complaints

Issue volume + categories

In this guide

  1. 01Overview
  2. 02Who This Car Is For
  3. 03Reliability & Problems
  4. 04Vehicle Specs
  5. 05Unlock Full Report
  6. 06FAQ

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