The 2018 Mazda 6 has 2 NHTSA recall campaigns affecting an estimated 383,258 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 74 complaints with NHTSA, most often about the engine. Last updated July 5, 2026.
Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.
Consequence
Fuel pump failure may cause an engine stall, increasing the risk of a crash.
Remedy
Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 5321K.
POWER TRAIN19V4970002019-06-27262,220 affected
Defect
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.
Consequence
An unexpected stall increases the risk of a crash.
Remedy
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.
Complaints by component
ENGINE
31
1fires
POWER TRAIN
9
UNKNOWN OR OTHER
9
1fires
ELECTRICAL SYSTEM
4
1fires
SERVICE BRAKES
4
FUEL/PROPULSION SYSTEM
3
FUEL SYSTEM, GASOLINE
2
STRUCTURE:BODY
2
SUSPENSION
2
VISIBILITY/WIPER
2
Total complaints74
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“Crack in cylinder head of engine. Mazda has been sued about this and have issued recalls on turbo engines, but not on non turbo ones though its the same systemic design issue with these engines. Wants me to pay 5-7k out of pocket.”
“Car had a coolant leak due to cracked cylinder head that was defective from the factory it was fixed but now the car has engine problems again. Don’t want to keep having these issues in the future”
“System failure: the power train (6-speed automatic transmission) suffered a major malfunction, documented by diagnostic codes p0731 (gear 1 incorrect ratio) and p0780 (shift error). The vehicle is available for inspection. Safety risk: the failure caused a sudden loss of propulsion while…”
“Per mazda inspection, the back side of cylinder head #3 has an oil leak which is leaking onto the exhaust manifold. This creates a direct fire hazard as mazda said they highly recommend not driving it for that reason. The mazda dealership inspected and confirmed the issue, it in february 2026,…”
“I recently discovered a significant oil leak near the exhaust manifold of my 2018 mazda 6 (2.5l na), which has resulted in visible smoke and a burning oil odor. Upon taking the vehicle to the nearest mazda dealership for a diagnosis, the service department informed me that the vehicle has suffered…”
“I recently discovered a significant oil leak near the exhaust manifold of my 2018 mazda 6 (2.5l na), which has resulted in visible smoke and a burning oil odor. Upon taking the vehicle to the nearest mazda dealership for a diagnosis, the service department informed me that the vehicle has suffered…”
“Cracked cylinder head causing oil leak and possible coolant leak. This is a known issue with this year and model. Mazda is trying to suggest the issue is only for the turbo engine, but the non-turbo engine is also defective, per countless reports online. I have a video from the service technician…”
“Was driving then car suddenly shut down and all panel lights turned on. The car would not start after an hour it started but was perkins when driving. Mechanics were unable to diagnose the issue.”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2018 Mazda 6 as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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