Recall 15V621 affects 14,411 2015-2016 Mazda MAZDA3 vehicles for fuel shut-off valve leaks and stalls. Do not drive. Free repair at any franchised Mazda dealer.
A fuel leak in the presence of an ignition source increases the risk of a fire, and an engine stall increases the risk of a crash. Do not drive the vehicle, even for short trips, until the repair is complete. Ask the dealer about towing and a rental car. Repair will be free at any franchised Mazda dealer once available.
Mazda is recalling 14,411 2015-2016 MAZDA3 vehicles because the fuel tank shut-off valve can send fuel into the emissions system, where it can leak onto the ground or stall the engine. Do not drive if your VIN is included; a fuel leak raises fire risk, an engine stall raises crash risk, and the dealer repair will be free once Mazda makes it available.
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What's wrong?
The fuel tank shut-off valve on the 2015-2016 Mazda MAZDA3 is part of the fuel tank assembly. Its job is to help control fuel movement and keep liquid fuel out of the emissions system, which is designed to handle fuel vapors rather than raw fuel.
On affected MAZDA3 vehicles, the cap on the shut-off valve was not installed correctly during assembly. That poor fit lets fuel enter the evaporative emissions system, including the charcoal canister. If enough fuel gets into that system, fuel can leak onto the ground or the engine can stall.
There is no warning sign before failure. Once the problem shows up, an owner can see a check-engine light, notice fuel on the ground, or experience an engine stall.
Who's affected?
Both MAZDA3 model years in scope are tied to the same fuel system component.
| 2016 Mazda MAZDA3 | fuel system |
|---|---|
| 2015 Mazda MAZDA3 | fuel system |
| Units affected | 14,411 |
| Field incidents | NHTSA has logged 2 field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific vehicle.
What's the safety risk?
A fuel leak in the presence of an ignition source increases the risk of a fire, and an engine stall increases the risk of a crash. Do not drive the vehicle, even for short trips, until the repair is complete. Ask the dealer about towing and a rental car. Repair will be free at any franchised Mazda dealer once available.
What should I do?
- Check your VIN to confirm your 2015-2016 Mazda MAZDA3 is included in this recall.
- Do not drive the vehicle until Mazda confirms the fuel shut-off valve and affected fuel tank emissions parts are repaired.
- Contact a franchised Mazda dealer for current instructions and rental-car support before moving the vehicle.
- Arrange towing or other dealer-approved transport if the vehicle has to be moved; do not drive it to the dealer yourself.
- Reference recall number 15V621 when you call, and ask whether the dealer will inspect the fuel shut-off valve and replace any affected emissions-system parts at no charge.
What happens at the repair
Mazda's current guidance is to keep the vehicle parked until the recall repairs are complete. Mazda will provide rental cars during that period. Once the dealer repair is available, a Mazda technician will inspect the fuel shut-off valve. When needed, the technician will replace the valve and the affected fuel tank emissions system components. The final dealer repair will be free once available, with parts and labor covered under the recall.
Timeline
| October 2, 2015 | NHTSA published the recall |
|---|---|
| October 6, 2015 | Dealer notification began |
| October 6, 2015 | Dealer notification ended |
| October 8, 2015 | Interim owner notification (was planned for this date) |
| October 20, 2015 | Owner notification mailed |
Frequently asked questions
What is recall 15V621?
Recall 15V621 covers 14,411 2015-2016 Mazda MAZDA3 vehicles with a fuel shut-off valve problem that can send fuel into the emissions system. Fuel can leak onto the ground or the engine can stall. Do not drive the vehicle until the dealer completes the free repair.
What should I do if my 2015-2016 Mazda MAZDA3 is on this recall?
Check your VIN to confirm your specific MAZDA3 is included in recall 15V621. If it is, do not drive the vehicle. Contact a franchised Mazda dealer for inspection and repair, and ask about the rental car Mazda provides until the repair is complete.
Is the recall repair free?
Yes. Mazda dealers will inspect the fuel shut-off valve and replace the valve and affected fuel-tank emissions components as needed free of charge. Federal recall law requires the manufacturer to provide the recall remedy at no cost at a franchised Mazda dealer.
What does do not drive mean for this Mazda recall?
Do not drive the vehicle until the recall repair is complete. This applies because the defect can cause a fuel leak or engine stall. Call a franchised Mazda dealer, reference recall 15V621, and ask how to move the vehicle without driving it.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/15V621000 |
|---|---|
| Mazda customer service | 248-295-7859 |
| NHTSA recall # | 15V621 |
| NHTSA recall # (full) | 15V621000 |
Source documents
-
Download Recall 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 31, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →