2018 Mazda MAZDA3: fuel pump failure

Filed Jan 23, 2026 · Fuel system · 179,550 miles · CT

The contact owns a 2018 Mazda Mazda3. The contact stated that while the vehicle was parked, the contact became aware of a strong fuel odor around the exterior of the vehicle and inside the vehicle. The contact stated that the failure had occurred after refueling. No warning lights were illuminated. The dealer was made aware of the failure, and an appointment was scheduled for a diagnostic test. The dealer had to reschedule the appointment due to a scheduling issue. The vehicle was taken to an independent mechanic, where it was diagnosed with a crack in the top of the fuel pump. The contact was informed that the fuel pump needed to be replaced, and the vehicle was being repaired. The contact referenced an unknown recall with a similar failure; however, the VIN was not associated. The manufacturer was made aware of the failure and a case was filed. The contact was informed that the vehicle needed to be taken to a dealer for a diagnostic test. The repair coverage was denied because the vehicle was not repaired by a dealer. The failure mileage was 179,550.

Filed Oct 20, 2025 · Engine, Transmission · CA

What component or system failed or malfunctioned, and is it available for inspection upon request? The high-pressure fuel pump failed. This component failure prevents the car from starting or staying running. The check engine code confirmed the high-pressure fuel pump failure. The failed component is currently at the Mazda dealership and is available for inspection upon request. How was your safety or the safety of others put at risk The car suddenly stalled while driving on the roadway, creating a dangerous situation. If this had happened on the freeway or in fast-moving traffic, it could have led to a serious accident. Losing power and control of the vehicle at higher speeds poses a major safety risk to both the driver and surrounding vehicles. I was fortunate that the failure occurred on a city street rather than on the freeway. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The Mazda dealership inspected the vehicle and confirmed that the high-pressure fuel pump had failed, which was also verified by the check engine code. This failure caused the stalling and starting issues. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle was inspected by an authorized Mazda dealership, which diagnosed and confirmed the high-pressure fuel pump failure. It has not been inspected by police or insurance representatives. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? Before the final failure, the car was hesitant to start, and after it stalled, the check engine light appeared. There were no prior warning messages or signs before the car suddenly stalled while driving. Additional details: The car is only seven years old with approximately 52,000 miles, and it is concerning that such a critical component would fail this early.

Filed Dec 10, 2024 · NV

The driver side if the door handle metallic wrap has begun peeling, I reached for my door handle and was cut by the wrap as it had torn away from the glued seems. It is small enough to cut my hand but barely visible to the naked eye. I had to put tape over the door handle to prevent further cuts from happening on my fingers. I took 2 photos as soon as the injuries happened and I realized what it was that was causing me to bleed from my scrape. The vehicle currently has a class action suit for the gas fuel pump and i contacted mazda to fix the pump and replace the door handle.

Filed Sep 27, 2024 · Engine, Fuel system · HI

I was parked in a downtown garage, and the vehicle would not start after many attempts, after about 45 minutes of trying (waiting 5 minutes between tries). The engine would turn normally and sounded like it was trying to start, but didn't fully engage. It finally did after 45 mins, and I drove it to the local Mazda dealer in Honolulu. I noticed the check-engine light was on at that time (but not before the incident). They ran a diagnosis, and couldn't replicate the issue, and said it may be a battery problem with low voltage, due to the engine's error codes. But I questioned that since the engine was able to turn normally and adequately at all starting attempts. And the battery was only 2 years old. So I replaced the battery at their recommendation. About 2 hours after picking up the car from the dealer, the same issue happened again. I recorded the issue on my phone this time, and gave it to the dealer. And this time I didn't want to chance it, so had the car towed back to the same dealer. They couldn't replicate the issue immediately, but after several attempts (over a day), they finally experienced it. They said the issue is the fuel pump. I am the original owner, and had purchased the car new from a Mazda dealership, and it has less than 26K miles on it. I researched previous recalls with this same issue on Mazdas, even the same year and model, and it appears to related: [XXX] [XXX] No one was physically harmed due to this issue, but it was certainly a safety risk. If the fuel pump fails while driving, the driver could lose control of the vehicle while in motion. I have attached the invoices for the repairs. I have contacted Mazda Customer Experience and they assigned a case number # [XXX]. However, I was informed that the repairs are unlikely to be covered as there is no open recall on the VIN regarding this issue. Thank you. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 30, 2024 · Fuel system · 51,000 miles · FL

The contact’s sister owns a 2018 Mazda Mazda3. The contact stated that while driving at various speeds, the vehicle stalled. The contact also stated that while attempting to depress the accelerator pedal, the vehicle failed to respond as intended. The vehicle was taken to a local dealer where it was diagnosed with a defective fuel pump. The vehicle was repaired, and the contact related the failure to the federal safety agency Campaign Number: 21V875000 (Fuel System, Gasoline); however, the VIN was not included. The manufacturer was made aware of the failure; however, no assistance was provided. The failure mileage was approximately 51,000.

Filed Nov 28, 2023 · Fuel system · NH

Fuel smell after a fill-up, fuel pump is cracked/deformed EXACTLY as described in Mazda bulletin 5321K (THIS BULLETIN EXCLUDES THIS MODEL). Strong fuel smell in the cabin, liquid fuel leaking from the top of the tank.

Filed Jun 27, 2023 · Fuel system · OH

I have a 2018 Mazda 3 hatchback 2.5l with a faulty fuel pump. I bought the car 1 year old with 2k mikes on it in 2019 from Jake Sweeney Mazda in Cincinnati ohio. They tell me the issue with power loss and stalling I need a new fuel pump it's failing cost is $1600 to repair. Then I learn a few days later on my own 121,000 2018-2109 Mazda 3 and others were recalled due to a faulty fuel pump with the exact problem I have manufactured by Denso. But I'm told my vin # isn't on the recall. The Denso fuel pump is the brand. However no one at the dealership in Cincinnati or Columbus ohio will tell me what type of fuel pump I have. When I went to the Columbus dealership I believe called Byer Mazda they told me an upgrade was done (which never happened) to my fuel pump. Unless Mazda stole my car and returned it no work was ever done on my fuel pump. Only oil changes. Could an upgrade NOT performed and my Vin was marked as upgraded but wasn't? Why do I have a faulty fuel pump withBthe EXACT symptoms on the EXACT model or EXACT year of my Mazda.. NO ONE at Mazda will tell me what brand fuel pump was manufactured in my car. Neither the dealerships or the 800# I call can saY what fuel pump was manufactured in my car. But they can say what was recalled based on vin#. The car just turned 5 years old and shouldn't need a new fuel pump. Isn't this all a little suspicious especially since they cannot conveniently for them say what manufacturer fuel pump is in my car. The car has lost all power and stalls. What happens when I pay the $1600 and the fuel pump is the Denso that is faulty. What then? No one will help. All of this is fishy as can be especially cause I own the EXACT YEAR BRAND AND MODEL WITH THE EXACT PROBLEM THE OTHERS WERE RECALLED FOR. Please say to yourself this is a little fishy and ask questions instead of going by a computer. As a human being look at this as highly coincidental and needs looking into instead of dismissing me.

Filed Feb 15, 2023 · Fuel system · 78,000 miles · FL

The contact's daughter owns a 2018 Mazda Mazda3. The contact stated while her daughter was driving at an unknown speed, the vehicle lost motive power. The contact stated that several unknown warning lights were illuminated during the failure. The vehicle was towed to the dealer to be diagnosed. The contact was informed that the fuel pump needed to be replaced. The contact related the failure to the federal safety agency Campaign Number: 21V875000 (Fuel System, Gasoline) however, the VIN was not included in the recall. The manufacturer was not contacted. The failure mileage was approximately 78,000.