Recall 20V666 affects 21 2020-2021 BMW M2 and M4 vehicles for missing fuel-injector dampers. Repair is free at any franchised BMW dealer.
BMW is recalling 21 2020-2021 M2 and M4 coupes because fuel injectors were installed without a damping component that reduces vibration. Over time, added vibration can damage the fuel line connection, leading to a fuel leak and higher fire risk near an ignition source; BMW dealers will complete the repair free of charge.
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What's wrong?
The fuel injector on 2020-2021 BMW M2 and M4 coupes meters gasoline into the engine so each cylinder gets the right fuel for combustion. Each injector is supposed to have a damping component, a small isolating piece that reduces vibration where the injector, fuel line, and fuel rail meet.
On affected vehicles, certain injectors were installed without that damping component during engine assembly. Without it, normal engine vibration is carried into the connection between the fuel line and the fuel rail. Over time, that extra movement can damage the connection, which is why BMW says those injectors were not produced to specification.
There is no warning sign before failure. An owner should not rely on noise, smell, or a dashboard light to identify this defect before the connection is damaged.
Who's affected?
Covers 2020 M2 and M4 coupes plus the 2021 M2, all tied to the fuel injection system.
| 2021 BMW M2 | fuel system |
|---|---|
| 2020 BMW M2 | fuel system |
| 2020 BMW M4 | fuel system |
| Units affected | 21 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific coupe is included.
What's the safety risk?
A damaged connection between the fuel line and fuel rail can let fuel leak. Fuel near an ignition source raises the risk of a fire. Schedule the recall inspection and repair soon, and stop using the vehicle if you detect fuel leakage before the appointment. Repair is free at any franchised BMW dealer.
What should I do?
- Check your VIN to confirm your 2020-2021 BMW M2 or M4 is included in this recall.
- Contact a franchised BMW dealer to schedule the free fuel-injector inspection and fuel-rail repair that addresses the missing damping component.
- Bring the recall notice if BMW mailed one. If not, reference recall number 20V666 when you call.
- Avoid ignition sources and stop using the vehicle if you see or smell fuel before the repair. Ask the BMW dealer about safe transport.
What happens at the repair
At the dealer, a BMW technician inspects the fuel injectors to confirm whether the damping component is present. If that component is missing, the technician replaces the fuel injectors and the fuel rail. Parts and labor are free under the recall. Out-of-pocket repairs already paid are handled through the BMW New Vehicle Limited Warranty program, not through a separate reimbursement program. Ask the service desk how warranty coverage applies if you have prior repair paperwork for this condition.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| October 29, 2020 | NHTSA published the recall |
|---|---|
| October 29, 2020 | Dealer notification began |
| October 29, 2020 | Dealer notification ended |
| December 18, 2020 | Owner notification mailed |
| December 21, 2020 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| December 21, 2020 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 20V666?
Recall 20V666 covers 21 2020-2021 BMW M2 and M4 coupes with fuel injectors that were installed without a damping component. That missing part increases vibration at the fuel line and fuel rail connection. BMW dealers will inspect the injectors and replace the affected parts for free.
What should I do if my 2020-2021 BMW M2 or M4 is on this recall?
Check your VIN to confirm your specific coupe is included in recall 20V666. If it is, contact a franchised BMW dealer to schedule the fuel injector inspection. If the damping component is missing, the dealer will replace the injectors and fuel rail for free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and BMW says dealers will inspect the fuel injectors and replace the injectors and fuel rail free of charge when the damping component is missing.
What is the safety risk?
The safety risk is a fuel leak and fire risk near an ignition source. Without the damping component, vibration increases at the connection between the fuel line and fuel rail. Over time, that connection can be damaged. The dealer repair addresses the affected fuel injector and fuel rail parts.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V666000 |
|---|---|
| BMW customer service | 1-800-525-7417 |
| NHTSA recall # | 20V666 |
| NHTSA recall # (full) | 20V666000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →