There are 4 owner-reported fuel system complaints for the 2018 Mazda Mazda6in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2018 Mazda Mazda6. The contact stated upon taken the vehicle to the dealer for an oil change, the dealer notified the contact of a fuel leak. The dealer diagnosed the vehicle and informed the contact that the top of the fuel tank and bolts connected to the fuel pump were significantly rusted, causing the fuel leak. The dealer determined that the fuel tank and the fuel pump needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure and informed the contact that no assistance would be provided because the contact had already authorized the dealer to repair the vehicle. The failure mileage was approximately 75,000.
Hello, I contacted Fremont mazda dealer to fix the below recall. I booked multiple appointment with this dealer to fix the recall but after visiting there service center location they give me reason they are unable to fix it by saying they don't have a part required for fixing the recall Manufacturer Recall Number5321K NHTSA Recall Number21V-875 Please help me to fix this recall as soon as possible. My next appointment schedule at fremont mazda delership on 9th Aptil. Dealer contact number +15104032525 Thanks, Akshay
The contact owns a 2018 Mazda Mazda6. The contact received notification of NHTSA Campaign Number: 21V875000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The dealer was made aware of the issue; however, the contact was informed that the parts were not yet available. The manufacturer had been notified of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. VIN tool confirms parts not available.
The contact owns a 2018 Mazda Mazda6. The contact stated that while driving at low speeds, the vehicle would hesitate upon the depression of the accelerator pedal without warning. The contact then received notification of NHTSA Campaign Number: 21V875000 (Fuel System, Gasoline) however, the part to do the recall repair was unavailable. The dealer was also notified about the recall; however, the contact was informed that the parts were not yet available. The manufacturer had been notified of the recall. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The failure mileage was approximately 27,000. VIN tool confirms parts are not available.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026