144 of the
4,006 complaints filed about the Mazda MAZDA3
are about the fuel system —
4% of everything owners reported.
The worst model year for it is 2014.
Low pressure fuel pump failure with 75,575 miles on odometer. Fuel pump completely seized. Car was parked at a retail location and would not start. Upon troubleshooting, mechanic was able to determine the low pressure pump was not delivering fuel. Pump was replaced. Faulty fuel pumps could lead to hazardous conditions as they are mounted within the fuel tank. I feel this is too early in the vehicles life for this component to have completely failed.
NHTSA complaint #11748076 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11744056 — an unverified report by a vehicle owner.
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 NHTSA 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 NHTSA 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. NHTSA should investigate if this is due to a defect in Mazda’s manufacturing process. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFOR
NHTSA complaint #11726838 — an unverified report by a vehicle owner.
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?
NHTSA complaint #11713563 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11712940 — an unverified report by a vehicle owner.
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/
NHTSA complaint #11694054 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11689933 — an unverified report by a vehicle owner.
Anytime the tank was filled with gas there was a strong smell of gasoline vapors that persisted for several days. The car was a few months past its warranty on emissions issues and so I was charged about $1500 to replace a cracked fuel pump and fuel vent that was stuck open. The mechanic also said that the check engine light should have warned me about the problem but that neither the dashboard light nor his diagnostic equipment was triggered by the defect. He suspects the car's computer is programmed to avoid drawing attention to the problem. Had the light been working I would likely have caught the problem while it was still under warranty.
NHTSA complaint #11686763 — an unverified report by a vehicle owner.
The contact owns a 2005 Mazda Mazda3. The contact stated that after refueling the vehicle, there was an abnormally strong fuel odor coming from the vehicle. The contact stated that while the vehicle was parked, other individuals informed the contact that there was a strong fuel odor coming from the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or a dealer. Additionally, the contact stated that the air bag warning light was illuminated. An independent mechanic diagnosed the vehicle and determined that the clock spring was faulty. The vehicle was not repaired. The dealer and the manufacturer were not contacted. The failure mileage was approximately 220,000.
NHTSA complaint #11660753 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11655737 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11652352 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11641769 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11640835 — an unverified report by a vehicle owner.
The contact owns a 2009 Mazda Mazda3. The contact stated while the vehicle was parked, the contact noticed a puddle of fuel on the ground underneath the vehicle. The contact stated that previously there was an abnormally strong odor inside the vehicle and in the trunk. In addition, the contact stated that the odor was very strong, causing her to become light-headed. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 102,212.
NHTSA complaint #11637360 — an unverified report by a vehicle owner.
Since the middle of 2023 I have noticed a gas fume smell both inside and outside of my 2015 Mazda Mazda3 after I fill my gas tank to full. This smell persists up until I use about a half tank of gas or slightly less. I do not top my gas tank off and stop filling when the automatic gas pump stops. There are no visible leaks on or around the gas tank or below the vehicle, and there are no noticeable cracks around the gas tank, valves, lines, etc. Additionally, there are no warning lights present on my dashboard or any codes.
NHTSA complaint #11633780 — an unverified report by a vehicle owner.
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)
NHTSA complaint #11616920 — an unverified report by a vehicle owner.
Started smelling gas fumes several weeks ago after fill ups at the gas station. Took to my mechanic who diagnosed a fuel tank leak due to rust. No warning lights present. No fuel on the ground or fumes within the cabin.
NHTSA complaint #11610399 — an unverified report by a vehicle owner.
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 NHTSA 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.
NHTSA complaint #11605452 — an unverified report by a vehicle owner.