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2021 BMW M850i Report

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

Updated Jun 4, 2026·Ethan Miller·2 Critical Recalls

Overall Score

6.0/ 10
Our Verdict
Proceed with caution

Key Takeaways

  • The integrated braking system recall (21V062000) is the most significant concern; ensure it has been fully addressed.
  • No owner complaints were logged, but this does not negate the importance of addressing manufacturer recalls.
  • Expect high fuel costs with a combined EPA rating of 19 MPG.
  • The M850i's All-Wheel Drive system provides confident traction in various conditions.
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OverviewWho This Car Is ForReliability & ProblemsVehicle SpecsUnlock Full ReportFAQ
Overview

2021 BMW M850i

The 2021 BMW M850i is a potent grand tourer that blends luxury with V8 power. For used car shoppers, its appeal lies in its performance and upscale interior. However, a significant recall concerning the integrated braking system demands buyer attention. While owner complaints are absent, this recall, impacting brake assist, is a critical factor in assessing the vehicle's long-term reliability and ownership risk. The presence of four recalls, including the braking system issue, suggests potential repair costs beyond routine maintenance.

Critical Failure Risk

A critical recall (21V062000) addresses a potential weld defect in the rotor and shaft of the integrated brake system. This can lead to separation during hard braking, causing a loss of ABS and braking assistance. The remedy involves replacing the entire integrated brake system.

Early detection can help you avoid a $2,000-$4,000 repair.

Open Maintenance Analysis →

Safety & Bulletins

Open Recalls4
Service Bulletins0
Full Recall History →

Owner Complaints

0

No primary complaint themes found.

Detailed Issue Breakdown →

Performance & Efficiency

Fuel Efficiency
Combined
19
MPG
City
17
MPG
Highway
24
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 powerful and luxurious grand tourer.

+2 more buyer-fit notes in the full report

Avoid if

Drivers seeking a low-maintenance vehicle with minimal potential for unexpected repair costs.

+2 more buyer-fit warnings in the full report

2021 BMW M850i Reliability Analysis

Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 BMW M850i.

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

Vehicle Specs

Fuel Type
Premium
Seating Capacity
4
Transmission
Automatic
Drivetrain
All-Wheel Drive
Body Style
Chassis Cab
EPA Combined MPG
19

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Unlock the complete checklist, maintenance outlook, and buyer verdict in one place.

Most Common Issues

1. Integrated Brake System Failure

Most reported

Usage data observed

2. Back-Over Prevention System Software/Camera Glitch

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: $200 - $350

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
4 recall campaign details & remedy notes
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FAQ

FAQ

Is the 2021 BMW M850i reliable?▾

The CarFocal Reliability Score for the 2021 BMW M850i is 8.1/10. Reliability score is 8.1/10. NHTSA recalls: 4. Owner complaints: 0.

How practical is the 2021 BMW M850i 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 M850i?▾

The CarFocal Overall Score for the 2021 BMW M850i is 6.0/10. Overall score is 6.0/10 (Mixed). Confidence 55%. Maintenance 8.7/10. Practicality 3.0/10.

What does it cost to own and maintain a 2021 BMW M850i?▾

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: $500 - $800. Repair prediction highlight: Integrated Brake System (estimated cost Min: $2,000 • Max: $4,000).

What engine is in the 2021 BMW M850i?▾

Engine specs list 8 • 4.4.

What transmission does the 2021 BMW M850i use?▾

According to CarFocal's specs for the 2021 BMW M850i, transmission is Automatic. The paired drivetrain is All-Wheel Drive.

Does the 2021 M850i require Premium gas?▾

Manufacturer fuel recommendation: Premium.

What is the combined EPA MPG for the 2021 BMW M850i?▾

EPA combined estimate is 19 MPG.

What driver assistance and safety features are available on the 2021 BMW M850i?▾

12 standard and 4 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.

How many people fit in a 2021 BMW M850i?▾

According to CarFocal's specs for the 2021 BMW M850i, seating capacity is 4.

What body style is the 2021 BMW M850i?▾

According to CarFocal's specs for the 2021 BMW M850i, body style is chassis_cab.

What drivetrain does the 2021 BMW M850i use?▾

According to CarFocal's specs for the 2021 BMW M850i, drivetrain is All-Wheel Drive. Transmission is Automatic.

Are there open safety recalls on the 2021 BMW M850i?▾

This model year has 4 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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