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2012 Mazda Mazda3: engine and transmission complaints

HIGH COMPLAINT SIGNAL
42%
75 of 178 relevant owner complaints are about the engine, transmission or fuel system

42% of relevant owner complaints filed with NHTSA on the 2012 Mazda Mazda3 are about the engine, transmission or fuel system. That is a model-level pattern, not bad luck.

Worse than 50% of the 1,230 model years we track (2010–2023).

Excludes 48 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 33%).

NHTSA data checked September 13, 2026
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Drivetrain complaints
75
engine, transmission, fuel
Total complaints
226
this model year
Fires reported
1
owner-reported
Recall campaigns
1
9 crashes · 5 injuries

Complaints by component

POWER TRAIN40 · 18%
ENGINE32 · 14%
EXTERIOR LIGHTING31 · 14%
ELECTRICAL SYSTEM25 · 11%
VEHICLE SPEED CONTROL20 · 9%
FUEL/PROPULSION SYSTEM18 · 8%

The years either side

2010
11%
68 of 686
2011
20%
18 of 132
2012
42%
75 of 226
2013
40%
28 of 117
2014
29%
38 of 138
2015
17%
20 of 129
2016
20%
19 of 102
2017
14%
11 of 83
2018
19%
20 of 108
2019
41%
26 of 74
2020
13%
4 of 32
2021
50%
22 of 49
2022
too few complaints
2023
too few complaints

Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.

Cleaner alternatives

Same car, a better year

Other compact cars with no elevated signal in 2012

The percentage is each model year's drivetrain complaint share. No elevated signal describes the model year, not any one car; a well-kept example of a flagged model can still be the right buy, and any of these still needs an inspection.

What owners reported

FUEL/PROPULSION SYSTEM09/26/2025
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.
FUEL/PROPULSION SYSTEM04/02/2025
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 find nothing and char…
POWER TRAIN06/23/2024
Car started jerking and on the way home, the car lost all power to the transmission. The check engine light came on as well as the AT and traction lights. Absolutely no power to the transmission. codes P0780 and P0751.

Three of 75 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.

Recall campaigns on this model year (1)

STRUCTURE:BODY:HATCHBACK/LIFTGATE
Mazda North American Operations (Mazda) is recalling certain model year 2010-2013 Mazda3 and Mazdaspeed3 vehicles manufactured November 18, 2008, to June 8, 2013, 2012-20…

This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.

Before you buy a 2012 Mazda Mazda3

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Experimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle.