2004 Mazda 6 Problems & Reliability

If you’re a car enthusiast or just someone who appreciates a reliable ride, you’ve probably heard of the Mazda 6. This mid-sized sedan has been a popular choice for many drivers, thanks to its sleek design and engaging driving experience. But like any vehicle, the 2004 Mazda 6 isn’t without its quirks and issues. Whether you’re considering buying a used one or just curious about its performance over the years, it’s important to know what you’re getting into. In this post, we’ll dive into some of the common problems reported by owners and discuss the overall reliability of this early 2000s gem. The 2004 Mazda 6 has its fair share of fans, but it’s not immune to the occasional hiccup. From transmission troubles to electrical gremlins, there are a few areas where this model has shown some wear and tear. However, it’s not all doom and gloom. Many owners have found that with regular maintenance and a little TLC, the Mazda 6 can be a dependable companion on the road. We’ll explore the most frequently reported issues, share some tips on how to address them, and give you a balanced view of what to expect if you’re thinking about making this car your next ride. So, buckle up and let’s take a closer look at the 2004 Mazda 6!
Body Components

Parts Assessed:

Windows, power locks, manual locks, doors, trunk, tailgate, mirrors, power and manual seat controls, seat belts, sunroof, convertible top, glass defects.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Brake pads, brake rotors, brake calipers, anti-lock braking system (ABS), brake lines, brake master cylinder, brake booster, parking brake, brake sensors, regenerative braking system (if applicable).

Reported Problems:

  • Engine Overheating Due to Failed Cooling Fan Control Module

Analysis:

The 2004 Mazda 6 has had some issues with engine overheating, mainly due to a failed cooling fan control module. This problem can lead to significant engine damage if not addressed promptly, affecting the car’s overall reliability. While the Mazda 6 is generally a solid vehicle, it’s important to keep an eye on the cooling system to avoid potential headaches.

Parts Assessed

Air conditioning compressor, AC condenser, AC evaporator, heater core, blower motor, automatic climate control system, refrigerant leaks, HVAC electrical components, temperature sensors, ventilation system.

Reported Problems:

  • Ticking Noise From Valve Lash Adjusters Due to Infrequent Oil Changes

Analysis:

The 2004 Mazda 6 is generally a reliable car, but one common issue that pops up is a ticking noise from the valve lash adjusters. This usually happens when oil changes are infrequent, leading to poor lubrication and causing the adjusters to make noise. Regular maintenance and timely oil changes can help prevent this problem and keep your Mazda 6 running smoothly.

Parts Assessed

CV joints, driveshaft, axles, differential, limited-slip differential (if applicable), traction control system, electronic stability control (ESC), four-wheel-drive (4WD) components, all-wheel-drive (AWD) components, transfer case, driveline vibration.

Reported Problems:

  • Updating PCM Software Will Help Problem With Stalling Under Light Acceleration

Analysis:

The 2004 Mazda 6 has had some issues with stalling under light acceleration, but updating the PCM software seems to be a solid fix for this problem. Overall, while the car has its quirks, addressing this software update can significantly improve its reliability. If you’re considering this model, just make sure the PCM software is up to date to avoid any unnecessary hiccups.

Parts Assessed

Infotainment system, GPS navigation, Bluetooth connectivity, touchscreen display, phone pairing, backup camera, rear entertainment system, head-up display, instrument cluster, digital gauges.

Reported Problems:

  • Shifting Concerns for the Six Speed Automatic Transmission

Analysis:

The 2004 Mazda 6 has had some issues with the six-speed automatic transmission, particularly with shifting concerns. Drivers have reported problems like rough or delayed shifting, which can be a bit of a headache. While these issues don’t affect every vehicle, they are something to keep in mind if you’re considering this model.

Parts Assessed

Radiator, radiator hoses, cooling fan, water pump, thermostat, antifreeze leaks, engine coolant reservoir, overheating prevention system, intercooler (if applicable).

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Alternator, battery, ignition switch, ignition coil, spark plugs, ignition wires, engine control module (ECM), electronic ignition system, auto stop/start function, battery cables, engine wiring harness, fuse box, relays, starter motor.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Engine rebuilds, cylinder head, head gasket, timing chain, timing belt, camshaft, crankshaft, connecting rods, turbocharger or supercharger (if applicable), valve train, piston rings, oil control system, engine knocking, engine misfires.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Muffler, catalytic converter, exhaust manifold, heat shields, exhaust pipes, oxygen (O₂) sensors, resonator, exhaust leaks, emissions control system.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Fuel pump, fuel injectors, fuel rail, fuel pressure regulator, throttle body, fuel gauge sensor, evaporative emissions system, EGR (exhaust gas recirculation) valve, charcoal canister, fuel filter, fuel tank, vapor leaks.

Reported Problems:

N/A

Analysis:

No major problem has been reported

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Onboard Electronics

Parts Assessed

Cruise control, keyless entry system, push-button start, wiper motor, warning lights, power mirrors, interior lighting, exterior lighting, dashboard indicators, electronic parking brake, tire pressure monitoring system (TPMS), alarm and security system, remote engine start, heated and ventilated seats, heated steering wheel, wireless charging pad.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Dashboard rattles, squeaks, wind noise, door seals, weather stripping, water leaks, air leaks, excessive road noise, suspension noise, drivetrain noise, exhaust rattles, engine bay noises.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Paint durability, clear coat protection, rust prevention, corrosion resistance, body panel alignment, door seals, window trim, plastic trim, metal finishes, fading, cracking, peeling.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Struts, shocks, control arms, sway bars, ball joints, tie rods, wheel bearings, power steering pump, power steering fluid leaks, electronic power steering (EPS), steering rack and pinion, steering linkage, alignment issues, torsion bars, springs, air suspension (if applicable).

Reported Problems:

N/A

Analysis:

No major problem has been reported

Parts Assessed

Transmission rebuild, transmission replacement, torque converter, transmission solenoids, gear selector, gear shifting, transmission control module (TCM), transmission fluid leaks, clutch (manual transmission), automatic transmission valve body, CVT (continuously variable transmission) components, dual-clutch transmission (DCT) components.

Reported Problems:

N/A

Analysis:

No major problem has been reported

Conclusion

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Flagship One

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