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.
Mazda MAZDA3 fuel leak problems
23 of the 2,994 owner complaints about the Mazda MAZDA3 describe fuel leak, most of them for the 2014 model year.
- owner complaints
- 23
- worst model year
- 2014
- typical mileage
- 81,800
Is there a fix? There are 4 recalls for this area of the car. See below
By model year
Often reported together
Trouble codes mentioned
P0455 1P0442 1
What owners say
While parked on a slight downhill grade, gasoline started leaking and created a significant puddle on the ground. No warning lamps, messages or other symptoms. An independent service center ran numerous tests over two days, including a smoke test. Diagnosis: There is a hole in top section of fuel tank and the fuel tank needs replaced. Recommendation was to not drive vehicle with fuel tank over half full. Due to the potential of leaking fuel in the presence of a hot ignition source increasing the risk of fire, driving the vehicle long distance with defective fuel tank appears to represent an unreasonable safety risk. Unfortunately, the vehicle is currently 300 miles from home. Mazda’s Mexican-made plastic fuel tank specifically required for our vehicle’s VIN is not currently available. (Mazda makes a similar metal fuel tank in [XXX] which will not fit.) Mazda has an estimated three-month backlog in [XXX] for the fuel tank. Still awaiting repair due to lack of availability of the appropriate fuel tank. Major safety recall the federal safety agency 16V684000 for the 2015 Mazda3 addresses a manufacturing defect where a fuel tank weld could fail, leading to fuel leaks and a potential fire. Recall is for vehicles produced between 12/4/13 – 9/18/15. Our vehicle was manufactured 02/2015 in [XXX] . However, recall is limited to three specific series of VINs and our vehicle falls in the gap between subject VIN ranges. A recent the federal safety agency complaint XXX (1/27/26) has the same issue: fuel tank leak, but not within range of recall VINs. It seems that the list of affected VINs included in recall 16V684000 should be expanded to include additional Mexican manufactured vehicles potentially with the same issue. Or create a new recall. Having a hole in the top of a plastic fuel tank securely mounted to the vehicle is unexpected through normal wear and tear. Any fuel leakage increases the risk of fire. the federal safety agency should investigate if this is due to a defect in Mazda’s manufacturing process. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFOR
Fuel leaking out of top of tank. Took car to two different shops. They both told me about a recall on the gas tank. They did every test possible and replaced O ring. Even did smoke evap system test. Tank still leaks from the top when full. They said the tank needs replaced. There is a recall for the year make and model but not my VIN?
The car leaks gas when the tank is full and if the car is inclined slightly. I've noticed the problem several month ago with an occasional odor but finally saw the gas leaking recently when it was parked on a sloped street.
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.
Our fuel tank is leaking for no reason. Brought it in last year (2024) for state inspections and let them know we smell gas when we park sometimes. They poke around and find nothing, but note there is a faint gas smell and to bring it to the dealer. We take it to Mazda to see if they can fix, they find nothing and charge my wife $250. Fast-forward to a year later, go for the same state inspection and we get failed. Our mechanic says theres a noticeable gas leak from the fuel tank and to take it to Mazda. There is clearly some issue with the fuel tank parts. The car itself only has 77k miles and it is 13 years old.
The contact owns a 2012 Mazda Mazda3. The contact stated that after refueling the vehicle, there was an abnormal gasoline odor inside and outside the vehicle for the next 5 days, prompting the contact to only fuel the vehicle halfway. The contact observed fuel leaking underneath the vehicle near the fuel tank. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the welded fuel tank nipple fuel line connector. The contact stated that the component was cracked along the bottom of the weld. The contact was informed that the fuel tank needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 81,000.
Fuel was leaking from car.
Fuel is leaking from the top of the gas tank, which is a very dangerous issue.
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.
Related recalls
Fuel system, gasoline: delivery: fuel pump
- What is wrong
- Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.
- Risk
- Fuel pump failure may cause an engine stall, increasing the risk of a crash.
- Remedy
- Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Mazda customer service at 1‑800‑222‑5500 Option 4. Mazda's number for this recall is 5321K.
Recall number 21V875000 · Recall details
Fuel system, gasoline: storage
- What is wrong
- Mazda North American Operations (Mazda) is recalling certain model year 2016 Mazda3 vehicles manufactured September 24, 2015, to October 16, 2015. During manufacturing, the fuel tanks for the affected vehicles may have deformed, resulting in a fuel leak from the recirculation pipe welded connection.
- Risk
- A fuel leak in the presence of an ignition source increases the risk of a fire.
- Remedy
- Mazda will notify owners, and depending on the tank lot number, dealers will inspect the recirculation pipe weld, replacing the fuel tank, as necessary, free of charge. The recall began November 1, 2016. Owners may contact Mazda customer service at 1‑800‑222‑5500. Mazda's number for this recall is 0216I.
Recall number 16V685000 · Recall details
Fuel system, gasoline: storage: tank assembly
- What is wrong
- Mazda Motors North American Operations (Mazda) is recalling certain model year 2014-2016 Mazda3 vehicles manufactured January 4, 2014, to September 18, 2015. The fuel tank of the affected vehicles may have been improperly handled during manufacturing and, as a result, the welded attachment of the Inlet Check Valve (ICV) may fail and allow fuel to leak.
- Risk
- A fuel leak in the presence of an ignition source increases the risk of a fire.
- Remedy
- Mazda will notify owners, and depending on the tank lot number, dealers will inspect the ICV weld, replacing the fuel tank, as necessary, free of charge. The recall began November 1, 2016. Owners may contact Mazda customer service at 1‑800‑222‑5500. Mazda's number for this recall is 0116I.
Recall number 16V684000 · Recall details
Fuel system, gasoline: storage: tank assembly
- What is wrong
- Mazda North American Operations (Mazda) is recalling certain model year 2015-2016 Mazda3 vehicles manufactured May 21, 2015, to August 25, 2015. The affected vehicles are equipped with a fuel tank with a shut-off valve that can allow fuel to enter into the fuel tank emissions systems. If enough fuel enters the emission system it may leak out onto the ground or result in an engine stall.
- Risk
- A fuel leak in the presence of an ignition source increases the risk of a fire. An engine that stalls increases the risk of a crash.
- Remedy
- Mazda will notify owners, and dealers will inspect the vehicle's fuel shut-off valve. As needed, the fuel shut-off valve and the affected fuel tank emissions system components will be replaced, free of charge. The recall began on October 20, 2015. Owners are advised not to drive their vehicle until the repairs have been completed. Mazda will provide rental cars until that time. Owners may contact the Mazda Customer Experience Center at 1-800- 222-5500, option #6. Mazda's number for this recall is 8615J.
Recall number 15V621000 · Recall details
Questions about the Mazda MAZDA3 fuel leak
Which Mazda MAZDA3 years have fuel leak problems?
The model years with the most reports are 2014 (8 complaints), 2012 (7 complaints) and 2015 (3 complaints).
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