2018 MAZDA MAZDA6 Complaints and Recall Information
The 2018 MAZDA MAZDA6 has 8 complaints and 3 recalls filed with NHTSA. Owners most frequently report issues with coolant leaks at the cylinder head causing engine overheating. Complaints related to engine stalls and brake caliper failures have also been reported.
Common Issues- Coolant leaks. Coolant leaks occur at the cylinder head around the exhaust manifold, resulting in engine overheating and uneven cabin temperature control.
- Engine stalls. The engine completely loses power without warning, sometimes while driving on highways, increasing the risk of crashes. The issue has been subject to a previous recall and reappeared afterward.
- Brake caliper failure. Premature caliper failure affects both front and rear brakes, causing rotor damage and grinding or squeaking sounds during operation.
- Oil leaks. Massive oil leaks associated with cracked cylinder heads have been reported, with warranty coverage limited to coolant leaks but excluding oil leaks.
- Fuel leaks. Significant rust on the top of the fuel tank and fuel pump bolts causes fuel leaks, requiring fuel tank and fuel pump replacements.
- Thermostat temperature imbalance. When set to the same temperature, the driver side blows cold air while the passenger side blows hot air.
- Rusted brake components. Rusted rotors and calipers cause brake pistons to stick, preventing brake pad replacement.
There are 3 recalls affecting the 2018 MAZDA MAZDA6 that involve engine control systems and fuel delivery. These recalls address software defects that cause stalling and mechanical issues in the fuel pump.
Recalls- Powertrain control module. NHTSA recall 19V497000 affects 262,220 vehicles including the 2018 Mazda6. A software error in the powertrain control module may cause the engine to stall unexpectedly, increasing crash risk. Dealers will reprogram the PCM software free of charge. The recall began on August 20, 2019.
- Fuel pump. NHTSA recall 21V875000 involves 121,038 vehicles including the 2018 Mazda6. The impeller inside the low-pressure fuel pump may crack and deform, causing fuel pump failure and potential engine stall. Dealers will replace the fuel pump free of charge. Owner notification letters were mailed on July 18, 2022.
Owners with repeated repairs related to coolant and oil leaks, brake failures, or unresolved recall issues may have rights under their state’s lemon law. It may be beneficial to consult legal resources for guidance on potential claims.
2018 MAZDA MAZDA6 Summary
2018
Model Year
8
Total Complaints
2
Total Recalls
383258
Vehicles Affected
Recalls
2018 MAZDA MAZDA6
121038 vehicles affected
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
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.
Risk: Fuel pump failure may cause an engine stall, increasing the risk of a crash.
2018 MAZDA MAZDA6
262220 vehicles affected
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
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.
Risk: An unexpected stall increases the risk of a crash.
Complaints
2018 MAZDA MAZDA6
ID: 2094809SERVICE BRAKES
Premature caliper failure on front and rear. Ruined rotors at 40k miles, confirmed caliper failure by two service shops. Grinding/squeaking sounds intermittently been happening for since 30,000 miles
2018 MAZDA MAZDA6
ID: 2091521FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
The contact owns a 2018 Mazda Mazda6. The contact stated upon taken the vehicle to the dealer for an oil change, the dealer notified the contact of a fuel leak. The dealer diagnosed the vehicle and informed the contact that the top of the fuel tank and bolts connected to the fuel pump were significantly rusted, causing the fuel leak. The dealer determined that the fuel tank and the fuel pump needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure and informed the contact that no assistance would be provided because the contact had already authorized the dealer to repair the vehicle. The failure mileage was approximately 75,000.
2018 MAZDA MAZDA6
ID: 2090110ENGINE
Bought used with 47k miles. Two weeks later, took it to my mechanic for an inspection, they found a massive oil leak on the back of the motor. Took it back to the dealership and they diagnosed it as a cracked cylinder head, for which there is a known TSB and warranty extension. Unfortunately, the warranty extension only covers a coolant leak from the cracked cylinder head, not an oil leak. Thankfully, the dealership took care of me but had they not, I was looking at a $7k+ repair on a car I had owned for 2 weeks. In the TSB, Mazda acknowledges that there were both design and manufacturing flaws for the affected model years. In acknowledging the issue, they should have issued a recall for affected vehicles, not a simple warranty extension
2018 MAZDA MAZDA6
ID: 2071372SERVICE BRAKES
I am having my brake pads changed at a local mechanic and when changing the pads, the mechanic was unable to change them because the rotors and calipers were rusted and the brake pistons stuck. The previous recall only considered Mazda 6 up to 2013 but my 2018 has had the same problem.
2018 MAZDA MAZDA6
ID: 2056488UNKNOWN OR OTHER
Software error/loss of engine power. No warning of this before it happens. The car completely loses power, and stalls or stops in the middle of me driving. This has happened on the freeway and risked my life as well as my husbands, and children. This same issue has been a previous recall and fixed in 2019 for my car, and now it is happening again.
2018 MAZDA MAZDA6
ID: 2053796UNKNOWN OR OTHER
Coolant leaks at the cylinder head around the exhaust manifold causing my car to over heat. Also when my thermostat is set to the exact temperature for both sides my driver side blows cold and the passenger side blows hot
2018 MAZDA MAZDA6
ID: 2053795ENGINE
Coolant leaks at the cylinder head around the exhaust manifold causing my car to over heat. Also when my thermostat is set to the exact temperature for both sides my driver side blows cold and the passenger side blows hot
2018 MAZDA MAZDA6
ID: 2052687ENGINE
Driving in traffic and the engine temperature warning appeared on dash. Dealer has confirmed there is a large coolant leak from the cylinder head. Mazda released a technical service bulletin regarding the issue affecting Mazda6, cx-5 and cx-9, but I will have to pay for a head gasket replacement.