2012 Mazda MAZDA3 fuel/propulsion system problems
18 owner complaints filed with NHTSA name the fuel/propulsion system on the 2012 Mazda MAZDA3 — 8% of all complaints for this model year.
What owners report
“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.”
filed Sep 26, 2025
“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…”
filed Apr 2, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other MAZDA3 years
| Year | Reports | Share |
|---|---|---|
| 2021 MAZDA3 | 2 | 4% |
| 2020 MAZDA3 | 2 | 6% |
| 2019 MAZDA3 | 8 | 11% |
| 2018 MAZDA3 | 7 | 7% |
| 2017 MAZDA3 | 3 | 4% |
| 2016 MAZDA3 | 6 | 6% |
| 2015 MAZDA3 | 12 | 9% |
| 2014 MAZDA3 | 21 | 15% |
| 2013 MAZDA3 | 2 | 2% |
| 2011 MAZDA3 | 3 | 2% |
| 2010 MAZDA3 | 4 | 1% |
| 2009 MAZDA3 | 3 | 3% |
Other reported problem areas on the 2012 Mazda MAZDA3
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.