Recall 21V679 affects 4,934 2013-2015 Porsche Boxster S, Boxster, and Cayman vehicles for rear-axle-carrier side-section fractures. Repair is free at any franchised Porsche dealer.
Porsche is recalling 4,934 2013-2015 Boxster S, Boxster, and Cayman vehicles because the rear-axle carrier side sections can fracture. A fracture can cause loss of control and raise crash risk, and Porsche dealers will complete the recall repair free of charge.
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What's wrong?
The rear-axle carrier side section on 2013-2015 Porsche Boxster S, Boxster, and Cayman vehicles is a structural casting at the rear of the car. It helps connect the rear axle carrier to the chassis components, so the rear suspension and axle assembly stay located where Porsche designed them to sit.
On affected vehicles, the cast carrier side part was made with a strontium level above Porsche's specification. That material issue weakens the properties of the casting over long use. Cracks can form in the side section, and the part can fracture instead of holding the rear axle carrier connection as designed.
An owner can hear a rattling noise from the rear of the vehicle. That is the warning sign Porsche identified, but the filing also says a warning is not ensured, so the part can crack without a clear noise first.
Who's affected?
Spans Boxster, Boxster S, and Cayman cars across 2013-2015, all tied to the drive axle.
| 2014 Porsche Boxster S | drive axle |
|---|---|
| 2015 Porsche Boxster | drive axle |
| 2014 Porsche Cayman | drive axle |
| 2013 Porsche Boxster S | drive axle |
| 2013 Porsche Boxster | drive axle |
| 2015 Porsche Cayman | drive axle |
| 2014 Porsche Boxster | drive axle |
| Units affected | 4,934 |
| Field incidents | NHTSA has logged 1 field incident to date. |
A matching year and model does not confirm inclusion. Check your VIN to confirm whether your specific car is included.
What's the safety risk?
A carrier fracture can cause loss of control and increase the risk of a crash. A rattling noise from the rear is a warning sign, but the vehicle can fail without a clear warning. Drive cautiously, schedule the repair soon, and call a Porsche dealer if you hear rear rattling. Repair is free at any franchised Porsche dealer.
What should I do?
- Check your VIN to confirm your 2013-2015 Porsche Boxster S, Boxster, or Cayman is included in this recall.
- Contact a franchised Porsche dealer to schedule the free rear-axle carrier side-section replacement that fixes the fracture risk.
- Bring the recall notice if Porsche mailed one. If not, reference recall number 21V679 when you call.
- Limit driving until the repair is complete, and ask the dealer whether the vehicle is safe to drive to the appointment.
What happens at the repair
At the dealer, a Porsche technician replaces the rear axle carrier side sections covered by recall 21V679. The replacement parts and labor are free under the recall. If you already paid out of pocket for this repair before the recall notice, Porsche's standard reimbursement plan covers documented expenses. Bring your repair invoice, payment proof, and any related paperwork to the service desk, or contact Porsche customer service at 1-800-767-7243.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 1, 2021 | NHTSA published the recall |
|---|---|
| September 16, 2021 | Dealer notification began |
| September 16, 2021 | Dealer notification ended |
| November 1, 2021 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| November 1, 2021 | Interim owner notification (was planned for this date) |
| January 6, 2022 | Owner notification mailed |
Frequently asked questions
What is recall 21V679?
Recall 21V679 covers 4,934 2013-2015 Porsche Boxster S, Boxster, and Cayman vehicles with rear-axle carrier side sections that can fracture. A carrier fracture can cause loss of control and increase crash risk. Porsche dealers will replace the rear-axle carrier side sections for free.
What should I do if my 2013-2015 Porsche Boxster S, Boxster, or Cayman is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 21V679. If it is, contact a franchised Porsche dealer to schedule replacement of the rear-axle carrier side sections. Reference recall number 21V679 or Porsche recall AMB7 when you call.
Is the recall repair free?
Yes. Porsche's recall remedy says dealers will replace the rear-axle carrier side sections free of charge. Use a franchised Porsche dealer for the recall work, and reference Porsche recall AMB7 or recall 21V679 when scheduling the appointment.
What is the safety risk?
The risk is loss of control if a rear-axle carrier side section fractures. Porsche's filing links that failure to increased crash risk. The repair path is to have a Porsche dealer replace the affected rear-axle carrier side sections at no cost.
When were owners notified about recall 21V679?
Porsche mailed owner notification letters on January 6, 2022. If you bought the vehicle used or never received a letter, check your VIN to confirm whether your specific Porsche is included, then call a Porsche dealer or Porsche customer service at 1-800-767-7243.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V679000 |
|---|---|
| Porsche customer service | 1-800-767-7243 |
| NHTSA recall # | 21V679 |
| NHTSA recall # (full) | 21V679000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →