The Mazda 6, known as the Atenza in certain markets, has been a staple in the midsize sedan segment since its inception. Renowned for its sleek design, engaging driving dynamics, and upscale interior, the Mazda 6/Atenza Sedan appeals to a wide range of drivers seeking both style and substance. However, like any vehicle, the 2018-present models come with their own set of common issues that potential buyers and current owners should be aware of. This comprehensive guide delves into the most prevalent problems associated with the Mazda 6/Atenza Sedan from 2018 to the present, providing detailed insights into each issue, along with essential buying tips and an overview of ownership costs.
Common Problems with the 2018-Present Mazda 6/Atenza Sedan
1. Transmission Issues
Description:
One of the most reported problems in recent Mazda 6/Atenza models involves the automatic transmission. Owners have experienced instances of rough shifting, delayed engagement, and unexpected downshifts.
Symptoms:
- Harsh or jerky gear changes
- Delayed response when shifting gears
- Unexpected downshifts while driving
- Transmission warning light activation
Causes:
- Software glitches in the transmission control module
- Worn or faulty transmission solenoids
- Low or degraded transmission fluid
Resolutions:
- Software Updates: Mazda has released software patches to address shifting irregularities. Ensuring the vehicle's software is up-to-date is crucial.
- Transmission Fluid Change: Regularly changing the transmission fluid can prevent many issues related to fluid degradation.
- Component Replacement: In severe cases, replacing faulty solenoids or other transmission components may be necessary.
Average Repair Cost:
- Software updates and fluid changes: $150-$300
- Solenoid replacements: $400-$800
- Complete transmission rebuild or replacement: $3,000-$5,000
2. Engine Misfires and Performance Drops
Description:
Engine misfires have been reported, leading to reduced performance and efficiency. These issues can manifest as hesitations during acceleration or noticeable drops in power.
Symptoms:
- Engine sputtering or hesitating during acceleration
- Decreased fuel efficiency
- Check Engine Light (CEL) illumination
- Rough idling
Causes:
- Faulty spark plugs or ignition coils
- Issues with the fuel injectors
- Vacuum leaks in the engine bay
Resolutions:
- Spark Plug Replacement: Regular maintenance includes replacing spark plugs to prevent misfires.
- Ignition Coil Replacement: Faulty coils should be replaced to ensure proper engine firing.
- Fuel Injector Cleaning or Replacement: Addressing clogged or malfunctioning injectors can restore engine performance.
- Vacuum Leak Sealing: Identifying and sealing vacuum leaks can resolve idle and performance issues.
Average Repair Cost:
- Spark plug replacement: $100-$200
- Ignition coil replacement: $200-$400
- Fuel injector cleaning/replacement: $300-$700
- Vacuum leak repairs: $150-$500
3. Infotainment System Glitches
Description:
The Mazda 6/Atenza's infotainment system, while feature-rich, has been prone to software glitches and hardware malfunctions, affecting user experience.
Symptoms:
- System freezes or unresponsive touchscreens
- Connectivity issues with smartphones (Bluetooth, Apple CarPlay, Android Auto)
- Delayed or failed system reboots
- Audio system malfunctions
Causes:
- Software bugs in the infotainment system
- Faulty hardware components (e.g., display screen, control module)
- Incompatibility with certain smartphone operating systems
Resolutions:
- Software Updates: Regularly updating the infotainment software can resolve many glitches.
- System Reset: Performing a factory reset can clear persistent issues.
- Hardware Replacement: In cases of hardware failure, replacing the faulty components (e.g., touchscreen, control modules) may be necessary.
Average Repair Cost:
- Software updates: Typically free or minimal cost at dealerships
- System reset: Free or included in service visits
- Hardware replacements: $300-$800 depending on the component
4. Electrical System Problems
Description:
Electrical issues in the Mazda 6/Atenza can range from minor annoyances to significant system failures, impacting various aspects of the vehicle's functionality.
Symptoms:
- Flickering or dimming dashboard lights
- Non-functional power windows or door locks
- Malfunctioning sensors (e.g., parking sensors, adaptive headlights)
- Battery drain issues
Causes:
- Faulty wiring or connectors
- Blown fuses or faulty relays
- Defective sensors or control modules
Resolutions:
- Diagnostic Testing: Identifying the exact cause through diagnostic scans.
- Wiring Repairs: Repairing or replacing damaged wiring and connectors.
- Component Replacement: Replacing faulty sensors, relays, or control modules as needed.
Average Repair Cost:
- Diagnostic testing: $100-$200
- Wiring repairs: $200-$600
- Component replacements: $150-$500 per component
5. Brake System Concerns
Description:
Owners have reported issues related to the brake system, including premature wear of brake pads and rotors, as well as occasional brake failure.
Symptoms:
- Squeaking or grinding noises during braking
- Reduced braking efficiency or responsiveness
- Vibrations or pulsations when applying brakes
- Brake warning light activation
Causes:
- Low-quality brake pads causing accelerated wear
- Warped or uneven rotors
- Hydraulic issues within the brake lines or master cylinder
Resolutions:
- Brake Pad Replacement: Using high-quality brake pads can extend rotor life and improve braking performance.
- Rotor Resurfacing or Replacement: Addressing warped or uneven rotors to ensure smooth braking.
- Hydraulic System Repair: Fixing leaks or replacing faulty brake lines and components.
Average Repair Cost:
- Brake pad replacement: $150-$300 per axle
- Rotor resurfacing/replacement: $200-$500 per axle
- Hydraulic repairs: $200-$600
6. Suspension and Steering Wear
Description:
The suspension and steering systems in the Mazda 6/Atenza are critical for maintaining ride comfort and handling. Over time, components can wear out, leading to compromised performance.
Symptoms:
- Clunking or knocking noises when driving over bumps
- Excessive play or looseness in the steering wheel
- Uneven tire wear
- Reduced handling responsiveness
Causes:
- Worn out bushings, ball joints, or tie rods
- Leaking shocks or struts
- Misaligned wheels
Resolutions:
- Component Replacement: Replacing worn bushings, ball joints, tie rods, shocks, or struts.
- Wheel Alignment: Ensuring wheels are properly aligned to prevent uneven tire wear and maintain handling.
- Regular Inspections: Conducting routine inspections to catch wear early and prevent further damage.
Average Repair Cost:
- Bushings and ball joints: $200-$600
- Shock or strut replacement: $300-$800 per pair
- Wheel alignment: $80-$150
7. Fuel System Issues
Description:
Problems within the fuel system, including fuel pump failures and injector issues, have been reported, affecting the vehicle’s performance and fuel efficiency.
Symptoms:
- Difficulty starting the engine
- Engine stalling or hesitation during acceleration
- Decreased fuel efficiency
- Unusual engine noises (e.g., whining from the fuel pump)
Causes:
- Worn or failing fuel pumps
- Clogged or faulty fuel injectors
- Issues with the fuel pressure regulator
Resolutions:
- Fuel Pump Replacement: Replacing a faulty fuel pump to restore proper fuel delivery.
- Injector Cleaning or Replacement: Cleaning clogged injectors or replacing faulty ones.
- Fuel Pressure Regulation: Repairing or replacing the fuel pressure regulator as needed.
Average Repair Cost:
- Fuel pump replacement: $500-$1,000
- Injector cleaning/replacement: $200-$600
- Pressure regulator repairs: $150-$400
8. Air Conditioning and HVAC Problems
Description:
The HVAC system in the Mazda 6/Atenza is designed for comfort, but issues can arise, particularly as the vehicle ages.
Symptoms:
- Inadequate cooling or heating
- Unpleasant odors from the vents
- Malfunctioning climate control buttons or displays
- Excessive noise from the HVAC system
Causes:
- Leaking refrigerant
- Faulty compressor or blower motor
- Clogged or dirty air filters
Resolutions:
- Refrigerant Recharge: Recharging the system with the appropriate refrigerant.
- Compressor or Blower Motor Replacement: Replacing faulty components to restore HVAC functionality.
- Filter Replacement: Regularly replacing or cleaning air filters to maintain air quality and system efficiency.
Average Repair Cost:
- Refrigerant recharge: $150-$300
- Compressor or blower motor replacement: $400-$800
- Filter replacement: $50-$100
9. Battery and Charging System Failures
Description:
Issues with the battery and charging system can lead to unexpected vehicle shutdowns and starting problems.
Symptoms:
- Difficulty starting the engine
- Dimming headlights or interior lights
- Warning lights related to the battery or charging system
- Unusual sounds from the battery area
Causes:
- Aging or defective batteries
- Faulty alternators or voltage regulators
- Loose or corroded battery terminals
Resolutions:
- Battery Replacement: Installing a new, high-quality battery to ensure reliable starts.
- Alternator Repairs: Fixing or replacing a faulty alternator to restore proper charging.
- Terminal Cleaning: Cleaning and securing battery terminals to prevent corrosion and ensure a good connection.
Average Repair Cost:
- Battery replacement: $100-$200
- Alternator replacement: $400-$600
- Terminal cleaning: $50-$100
What to Look For When Buying a 2018-Present Mazda 6/Atenza Sedan
When considering the purchase of a Mazda 6/Atenza Sedan from 2018 to the present, conducting a thorough inspection is crucial to avoid inheriting common problems. Here are key areas to focus on:
Transmission Health:
- Test Drive: Pay attention to shifting smoothness and responsiveness.
- Service Records: Verify regular transmission fluid changes and any recent repairs.
Engine Performance:
- Listen for Misfires: During acceleration, ensure the engine runs smoothly without hesitation.
- Check for Leaks: Inspect under the vehicle for any signs of oil or coolant leaks.
Infotainment System Functionality:
- Test All Features: Ensure the touchscreen, Bluetooth connectivity, and other infotainment features operate correctly.
- Software Updates: Confirm that the system has received the latest software updates.
Electrical Systems:
- Check All Electronics: Test power windows, door locks, lighting, and other electronic components.
- Battery Health: Ensure the battery is in good condition and there are no signs of electrical drain.
Brake Condition:
- Brake Inspection: Check the brake pads and rotors for wear and ensure the braking response is firm.
- Listen for Noises: Any squeaking or grinding sounds should be investigated.
Suspension and Steering:
- Ride Comfort: Assess the suspension for smoothness and listen for any unusual noises.
- Steering Response: Ensure the steering feels responsive and there is no excessive play.
Fuel System:
- Fuel Efficiency: Compare the vehicle’s fuel efficiency with manufacturer specifications.
- Engine Noises: Listen for any unusual noises from the fuel pump area during operation.
HVAC System:
- Climate Control Test: Verify that the heating and cooling systems function correctly and efficiently.
- Check for Odors: Ensure there are no unpleasant smells emanating from the vents.
Overall Vehicle Condition:
- Exterior Inspection: Look for signs of rust, dents, or bodywork repairs.
- Interior Condition: Check for wear and tear on seats, controls, and overall interior aesthetics.
Additional Tip:
Always request a comprehensive pre-purchase inspection from a certified Mazda technician. This can uncover hidden issues and provide peace of mind before finalizing the purchase.
How Expensive Is It to Own a 2018-Present Mazda 6/Atenza Sedan?
Owning a Mazda 6/Atenza Sedan from 2018 to the present can be both rewarding and cost-effective, provided you are aware of potential expenses related to maintenance and repairs. Here’s a breakdown of typical ownership costs:
Routine Maintenance:
- Oil Changes and Filters: Approximately $100-$200 annually.
- Brake Pads and Rotors: Replacement every 30,000-70,000 miles, costing around $300-$700 per axle.
- Tire Rotations and Alignments: $50-$150 per service.
Repairs and Parts Replacement:
- Transmission Repairs: Budget $1,000-$3,000 annually if issues arise.
- Electrical Repairs: Expect $300-$800 depending on the severity of the problem.
- Suspension Repairs: Allocate $500-$1,500 annually for potential suspension work.
Insurance Costs:
- Premiums: Depending on your location, driving history, and coverage level, annual insurance costs range from $800-$1,500.
Fuel Costs:
- Fuel Efficiency: The Mazda 6/Atenza typically offers around 25-30 mpg combined, depending on the engine and driving conditions.
- Monthly Fuel Expenses: Vary based on driving habits, but expect approximately $100-$200 per month.
Depreciation:
- Value Retention: Mazda vehicles generally hold their value well, but expect an annual depreciation of around 10-15%.
Extended Warranties and Service Plans:
- Optional Coverage: Prices vary based on coverage and duration, typically ranging from $500-$2,000.
Total Annual Ownership Costs:
On average, owners can expect to spend between $2,000 and $5,000 annually, factoring in routine maintenance, potential repairs, insurance, and fuel costs. This estimate can vary based on driving habits, vehicle condition, and unforeseen repairs.
Final Thoughts
The 2018-present Mazda 6/Atenza Sedan stands out in the midsize sedan market for its elegant design, engaging driving experience, and upscale features. While it boasts numerous strengths, being aware of its common problems is essential for both current owners and prospective buyers. Transmission issues, engine misfires, and infotainment glitches are among the most prevalent concerns, but with proactive maintenance and timely repairs, these challenges can be effectively managed.
When purchasing a Mazda 6/Atenza Sedan, a thorough inspection and a comprehensive pre-purchase check are invaluable in ensuring you acquire a reliable and well-maintained vehicle. Understanding the potential ownership costs will also help in budgeting appropriately for maintenance and repairs, ensuring a smooth and enjoyable ownership experience.
Overall, the Mazda 6/Atenza Sedan continues to offer a compelling blend of style, performance, and practicality. With the right care and attention, it can provide many years of dependable and enjoyable driving, making it a worthy consideration in the competitive midsize sedan market.