3rd generation (BM / BN) · BM (2014-2016), BN (2017-2018 facelift) · 716 complaints, 367 with mileage
Owners filed 716 complaints with NHTSA about the 2014–2018 Mazda Mazda3, and 367 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.
31% of failures fall within the first 12,000 miles. Failures clustered that early usually indicate a design or manufacturing problem rather than wear.
The most-reported areas are problems owners could not categorise (17.6% of complaints, typically around 34,250 miles), the electrical system (17.2% of complaints, typically around 24,000 miles), the brakes (10.3% of complaints, typically around 37,500 miles).
9 recall campaigns cover this generation.
| System | Complaints | Share | Typical mileage | Middle half |
|---|---|---|---|---|
| Unknown Or Other | 126 | 17.6% | 34,250 | 21,000–66,400 |
| Electrical System | 123 | 17.2% | 24,000 | 5,000–44,000 |
| Service Brakes | 74 | 10.3% | 37,500 | 12,000–65,000 |
| Back Over Prevention | 63 | 8.8% | 60,000 | 38,000–80,000 |
| Fuel/Propulsion System | 49 | 6.8% | 17,000 | 791–38,000 |
| Engine | 43 | 6.0% | 14,600 | 7,062–46,000 |
| Visibility/Wiper | 37 | 5.2% | 23,644 | 14,580–50,000 |
| Power Train | 29 | 4.1% | 26,000 | 9,000–68,000 |
| Parking Brake | 17 | 2.4% | 71,000 | 60,000–97,600 |
| Vehicle Speed Control | 16 | 2.2% | 16,100 | 6,700–27,000 |
| Year | Complaints | With mileage |
|---|---|---|
| 2014 | 181 | 120 |
| 2015 | 154 | 94 |
| 2016 | 137 | 61 |
| 2017 | 105 | 44 |
| 2018 | 139 | 48 |
Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 29,850 miles; the figures below show which parts of the car run ahead of that and which run behind.
Problems owners could not categorise accounts for 17.6% of complaints (126 reports, 40 of them with a mileage figure), with a median of 34,250 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 21,000 and 66,400 miles.
The electrical system accounts for 17.2% of complaints (123 reports, 48 of them with a mileage figure), with a median of 24,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 5,000 and 44,000 miles.
The brakes account for 10.3% of complaints (74 reports, 46 of them with a mileage figure), with a median of 37,500 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 12,000 and 65,000 miles.
The reversing camera and sensors account for 8.8% of complaints (63 reports, 29 of them with a mileage figure), and they fail late — a median of 60,000 miles, considerably beyond the vehicle's overall median. That pattern is consistent with normal service life rather than a defect, though it matters for anyone buying an example already near that mileage. The middle half of these reports falls between 38,000 and 80,000 miles.
The fuel and propulsion system accounts for 6.8% of complaints (49 reports, 17 of them with a mileage figure), and it fails early — a median of 17,000 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 791 and 38,000 miles.
The engine accounts for 6.0% of complaints (43 reports, 32 of them with a mileage figure), and it fails early — a median of 14,600 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 7,062 and 46,000 miles.
Within this generation, complaint volume is not constant across model years. The 2014 model year drew the most — 181 complaints — while 2017 drew the fewest at 105. The median year sits at 139.
NHTSA records 9 recall campaigns covering vehicles in this generation. A recall means the manufacturer or the regulator concluded there was a safety defect or a standard was not met, and that a free remedy is owed to owners — including second and later owners.
The campaigns cluster around the fuel system (4), the reversing camera and sensors (1), visibility equipment (1). Repeated recalls against the same area of the car generally mean the first remedy did not fully resolve the underlying problem.
Recall status is specific to the individual vehicle, not the model. Checking a VIN against NHTSA's lookup is free and takes under a minute, and it is the only way to know whether a particular car has had the work done.
Of the 716 complaints filed against this generation, 61 reported a crash; 6 reported a fire; 35 reported an injury; 2 reported a fatality. Crash-involved reports represent 8.5% of the total.
These are owner-reported outcomes, not verified investigations, and they are not adjusted for how many of these vehicles are on the road. They are included because the distinction between a fault that strands a car and a fault that causes a collision is the one that matters most, and it is not visible in a complaint count alone.
For a buyer, an early-failure pattern is comparatively good news on a used example: 30% of the reported failures occur in the first 12,000 miles, which on a car of this age means they have already happened or they were never going to. Service history matters more than mileage here.
On inspection, problems owners could not categorise and the electrical system are where this generation's reports concentrate, so those are the areas worth a specific look. The electrical system in particular shows a median failure mileage of 24,000, which gives a concrete number to compare against the odometer of any car you are considering.
None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.
Mazda Connect TFT display delamination and ghost-touch behavior — the screen changes stations or navigation input on its own while the car is stationary. Replacement is expensive when not covered by goodwill.
Water entry into the rear brake caliper corrodes the electric parking brake actuator shaft, which can bind and leave the parking brake applied or inoperative. Recall covering certain 2014-2016 cars. Separately, premature rear brake pad and rotor wear is a high-frequency complaint.
Fuel tank shut-off valve can allow liquid fuel into the evaporative emissions system, creating a leak and fire risk. Recall covering certain 2015-2016 cars.
Incorrectly manufactured exhaust valve springs that may fracture in service, causing engine stall. Recall covering certain 2018 cars. Separately, front timing cover oil seepage and intake valve carbon deposits from direct injection with PCV oil carryover.
| Campaign | Date | Component |
|---|---|---|
| 23V487000 | 2024-08-14 | Back Over Prevention: Sensing System: Camera |
| 21V875000 | 2022-07-18 | Fuel System, Gasoline:Delivery:Fuel Pump |
| 19V272000 | 2019-05-07 | Visibility:Windshield Wiper/Washer |
| 17V745000 | 2018-01-22 | Engine And Engine Cooling:Exhaust System |
| 17V393000 | 2017-12-08 | Parking Brake |
| 16V685000 | 2016-11-18 | Fuel System, Gasoline:Storage |
| 16V684000 | 2016-11-18 | Fuel System, Gasoline:Storage:Tank Assembly |
| 15V621000 | 2015-10-20 | Fuel System, Gasoline:Storage:Tank Assembly |
| 14V173000 | 2014-05-19 | Electrical System:Alternator/Generator/Regulator |