2014 Mazda MAZDA3 fuel system problems

Filed Jun 14, 2026 · Fuel system · RI

The fuel tank leaks fuel at a full tank and smells of gas in the cabin until about 3/4 tank. Car was dripping a large puddle of gas inside of a parking garage. Problem has been reproduced by my mechanic even after replacing the fuel pump retaining ring. It has not been inspected by the manufacturer or police. CEL did not come on until recently reporting a very small EVAP leak. Inside the car and the surrounding area would smell of gasoline even if there was no leak in the ground.

Filed Oct 17, 2025 · Fuel system · NY

Gas tank is leaking from the TOP. I could smell gas after a refill (and refilling a portable tank) that I thought must have been a spill I hadn't noticed, and the smell faded. But then it happened again at the next refill, and I knew it wasn't just a spill. Brought it to our trusted mechanic who said that the TOP of the tank was rusted out (wow!)(so, not from road salt) and needs to be replaced. Not cheap, but worse, I'd been driving around in a very hazardous situation that Mazda knows happens. No warning lights, no recall. Thanks, guys. Here's a thread about this being a common issue: https://www.mazda3revolution.com/threads/2014-mazda3-fuel-tank-replacement.245797/

Filed Apr 21, 2025 · Fuel system · OH

Noticed strong smell of gasoline when the car was parked. Took it to an independent service dealer who diagnosed leaking fuel from top of the tank. Gas tank was removed and replaced. Tank cost was $380.00 plus repair shop labor/supplies cost. See attached invoice. During a recent online search for this vehicles current book value I noticed there was a manufactures recall issued for this same problem, that I paid to have repaired. I never received any recall notice for a leaking gas tank problem for my vehicle.

Filed Feb 5, 2025 · Fuel system · NJ

Gas tank is leaking. According to the records the service recall has been repaired (via a previous owner). However, what started out as fumes is now definitely a leak and the dealership will not repair under the recall a second time.

Filed May 10, 2024 · Fuel system · NY

I thought I smelled gasoline when sitting in my car. I got out and inspected all around the vehicle, discovering that gasoline was leaking underneath. Both the hazardous fumes and the potential for a fire in the vehicle put me at risk. The loss of fuel on public roads could have resulted in danger to anyone behind me on the road due to the fire hazard and potential loss of traction before I noticed the problem. I immediately brought the car to my mechanic's personal shop (he is also a master mechanic at a local automotive dealership). He confirmed that the leak was gasoline and diagnosed the problem as a rusted seam near the top of the fuel tank having ruptured, allowing the leak and filling the cabin of the vehicle with fumes. I knew that the local Mazda dealership would be unable to repair this promptly, if at all, since they had just fixed the exact same problem in my mother in law's vehicle of the same make, model, and year, and had struggled to get the replacement tank for weeks due to the supply chain problems experienced during the COVID-19 pandemic. Therefore, I paid my own mechanic to source and install a tank, and coat it with anti-corrosion treatment. I contacted Mazda, explained the problem, and demanded they reimburse me, as the car was only 8 years old at the time. The Mazda representative refused to do anything to help me and did not answer my subsequent emails, so I posted about this problem on the [XXX] forum, and discovered others have had the same problem as my mother in law and I. There were no warning signs of the problem other than the smell of gasoline. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 25, 2024 · Fuel system · MA

Fuel was leaking from car.

Filed Mar 11, 2024 · Driver assistance, Fuel system · OH

Gas smell / leak from gas tank when more than 7/8 full. Seems to leak from the top. AEB frequently says disabled due to high interior car temperature. Even in winter when temperature below freezing.

Filed Oct 12, 2023 · Fuel system · 158,500 miles · CT

The contact owns a 2014 Mazda Mazda3. The contact stated that while parked, the vehicle had smelled gas fumes in the vehicle. No warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the failure was due to a plastic fuel pump module in the gas tank had corroded and the seam of the gas tank had leaked. The vehicle had not been repaired. The manufacturer was made aware of the failure and determined that the VIN was not included in a recall. The failure mileage was approximately 158,500.

Filed Sep 29, 2023 · Fuel system · MA

strong gas smell

Filed Sep 28, 2023 · Fuel system · WI

The gas tank leaked gas due to corrosion on the top of the tank at the fuel pump. Strong smell of gas fumes evident and puddling of gas under the car after being driven. The problems was diagnosed at McGrath City Mazda in Chicago and also by my local garage JDH Auto repair in Prairie du Sac, WI. The fuel tank was replaced, along with the evaporation cannister. Until their was actual leaking of gasoline, there were no signs, lights, warnings of this problem. I have retailed the old tank if you wish to inspect the tank. This car was washed on a regular basis and did not show other issues from corrosion.