Mazda Mazda3 的 318 条投诉中有 47 条（14.8%）与发动机有关，是这款车第二大的问题类别。这个比例是全部跟踪车型发动机类占比的 0.7 倍。
按年款看，发动机类投诉以 2021 款最多（18 条，占该年款投诉 37%），2020 款最少（1 条）。近 12 个月新增 2 条发动机类投诉。
车主最常描述：“oil”、“engine”、“low”、“light”与“malfunction”。其中 3 条（6.4%）提到碰撞或起火，并报告 2 人受伤、1 人死亡。
有 2 项召回案与该类别有关，最近一项是 19V497000（2019-06-27，涵盖 2019 款）。
近 12 个月: 2 · 前 12 个月: 7
I was driving on the highway and decided to switch int the left lane so I sped up and heard a big bang and what sounded like my bumper being dragged against the ground.
These issues been happening since the second month I owned my 2019 mazda 3 hatchback. 1- suspensions, they're very rough & harsh., they bounce so much for no reason, I damaged one tire already while I was driving on i476 normal highway where I stepped on…
My 2018 Mazda 3 has an intermittent electrical failure on the high-speed CAN network that causes multiple safety-critical systems to fail while driving.
What component or system failed or malfunctioned, and is it available for inspection upon request? The high-pressure fuel pump failed. This component failure prevents the car from starting or staying running.
Spontaneous loss of power while driving on highway. Check engine light came on. Speed limited by car. Continues to vibrate especially at idle from cold start. Code P0304 intermittently popping up.
The thermostat malfunctioned on this vehicle, resulting in the thermostat remaining open and providing excess coolant to the engine, which in turn damaged internal components of the engine (compromises safety), decreased fuel economy, increased emissions…
节选自向 NHTSA 提交的投诉原文（英文），为了长度有截短。ODI 编号是 NHTSA 的记录编号。
摘要: Mazda North American Operations (Mazda) is recalling certain 2018-2019 CX-5, Mazda6, and 2019 Mazda3 vehicles. A software error in the powertrain control module (PCM) may cause the engine to stall.
处置: Mazda will notify owners, and dealers will reprogram the PCM software, free of charge. The recall began August 20, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 3719F.
摘要: Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3 vehicles, equipped with an incorrect exhaust valve spring. The incorrect exhaust valve spring may fail while driving, potentially causing an engine stall.
处置: Mazda will notify owners, and dealers will inspect the engines and replace any incorrect exhaust valve springs, free of charge. The recall is expected to begin January 20, 2018. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 1717K.
Mazda Mazda3 的 318 条投诉中有 47 条（14.8%）与发动机有关，是这款车第二大的问题类别。这个比例是全部跟踪车型发动机类占比的 0.7 倍。
按年款看，发动机类投诉以 2021 款最多（18 条，占该年款投诉 37%），2020 款最少（1 条）。
有 2 项召回案与该类别有关，最近一项是 19V497000（2019-06-27，涵盖 2019 款）。