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2018 Mazda Mazda6 Maintenance Schedule

Manufacturer-recommended service intervals and open recall alerts for your 2018 Mazda Mazda6.

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Recalls2Full scheduleKnown issues7

How Mazda schedules service

Mazda's Skyactiv engines use unusually high compression ratios (13:1 to 16:1) and require strict adherence to oil intervals — extending oil life on a Skyactiv engine accelerates carbon buildup on intake valves. Mazda's published Schedule 1 (severe) covers most US driving conditions. Mazda3, CX-5, CX-30, and CX-50 share the Skyactiv-G platform.

⚠️

2 Open Recalls

Source: NHTSA

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Campaign #21V875000 · Dec 11, 2021

Issue: 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.

Fix: 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.

ENGINE

Campaign #19V497000 · Jun 27, 2019

Issue: 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.

Fix: 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.

Recall data refreshed Jul 19, 2026.

Essential maintenance

Critical for safety and preventing major damage

🛢️

Engine Oil & Filter

Every 5,000 mi

Replace 0W-20 full-synthetic oil every 5,000 miles under Schedule 1. Schedule 2 (highway-only): 7,500 miles. Mazda CX-50 Turbo and CX-9: 5,000 miles regardless of schedule.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

🔄

Tire Rotation

Every 7,500 mi

Rotate tires every 7,500 miles. AWD CX-5, CX-50, and CX-9: 5,000 miles to prevent uneven wear from front-biased AWD coupling.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

🛑

Brake Inspection

Every 7,500 mi

Inspect brake pads, rotors, and parking brake at every oil change. Mazda3 and CX-5 front pads typically last 35,000-50,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

🧪

Brake Fluid

Every 30,000 mi

Replace DOT 3 brake fluid every 30,000 miles or 36 months.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

💨

Engine Air Filter

Every 30,000 mi

Replace engine air filter every 30,000 miles. Skyactiv-G direct injection is sensitive to airflow restriction — inspect at every oil change.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

⚙️

Automatic Transmission Fluid

Every 60,000 mi

Replace ATF every 60,000 miles severe / 100,000 normal. Use Mazda FZ ATF — substitutes cause harsh 1-2 shifts and torque converter shudder.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

⚡

Spark Plugs

Every 60,000 mi

Iridium spark plugs every 60,000 miles on Skyactiv-G 2.0L and 2.5L. CX-50 Turbo and CX-9 Turbo: 45,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

🌡️

FL-22 Long-Life Coolant

Every 60,000 mi

Mazda FL-22 (yellow): first change at 120,000 miles or 10 years, then every 60,000. Do not substitute — silicate-free formula prevents water pump damage on Skyactiv engines.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

🔩

Transfer Case / Rear Diff (AWD)

Every 60,000 mi

AWD CX-5, CX-50, CX-9: replace transfer case fluid and rear diff fluid every 60,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$105–$140

Shop

~$75–$100

DIY

~$15–$40

AWD/4WD vehicles only. Easy drain-and-fill on most platforms.

Recommended maintenance

Extends the life of your vehicle and improves comfort

🌬️

Cabin Air Filter

Every 15,000 mi

Replace cabin air filter every 15,000 miles. Behind the glove box on Mazda3, CX-5, CX-30, and CX-50.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2018 Mazda Mazda6.

Reported to NHTSA

Premature brake caliper or rotor failure

SERVICE BRAKES

3 NHTSA complaints · 2024-04 → 2025-05

“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”
— Owner report, NHTSA ODI #11663276
“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…”
— Owner report, NHTSA ODI #11646848
“On [XXX] I purchased a Mazda 6 at Ocean Mazda in Miami, Florida. The car has 18,700 miles. The reason why the car has only 18K miles it's because out of the 4 years we have owned it, it was not used as much as a result of the COVID pandemic and my daughter attending online…”
— Owner report, NHTSA ODI #11582244

Read all complaints on NHTSA →

Fuel system recall repair parts unavailable

FUEL SYSTEM, GASOLINE

3 NHTSA complaints · 2022-01 → 2022-04

“The contact owns a 2018 Mazda Mazda6. The contact received notification of NHTSA Campaign Number: 21V875000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The dealer was made aware of the issue; however, the contact was informed that the…”
— Owner report, NHTSA ODI #11460796
“Hello, I contacted Fremont mazda dealer to fix the below recall. I booked multiple appointment with this dealer to fix the recall but after visiting there service center location they give me reason they are unable to fix it by saying they don't have a part required for fixing…”
— Owner report, NHTSA ODI #11459352
“The contact owns a 2018 Mazda Mazda6. The contact stated that while driving at low speeds, the vehicle would hesitate upon the depression of the accelerator pedal without warning. The contact then received notification of NHTSA Campaign Number: 21V875000 (Fuel System, Gasoline)…”
— Owner report, NHTSA ODI #11448661

Read all complaints on NHTSA →

Hydraulic lash adjuster ticking noise

ENGINE

2 NHTSA complaints · 2024-03 → 2024-03

“Mazda has a huge issue with there HLAs hydraulic lash adjusters. I've driven the car for 60k+ miles and it's ticked every since I got the car. And many people in the community also have the issue. And Mazda says it's fine and to rev the car above 3k rpms.”
— Owner report, NHTSA ODI #11578921

Read all complaints on NHTSA →

Belt tensioner premature failure

UNKNOWN OR OTHER, ENGINE

2 NHTSA complaints · 2021-07 → 2022-04

“Mazda is producing and installing bad belt tensioner sand bad belts for new cars belt tensioner only lasts about 27,500 miles and belt only lasts 11 month/14,000 miles belt tensioner is a major safety issue”
— Owner report, NHTSA ODI #11519167
“I took my car in for scheduled maintenance and the technicians at the Mazda dealer found out the tensioner and belt needed to be replaced, when the car is less than 36k in miles. Vehicles being repaired under warranty but a tensioner should not be going out this early in the…”
— Owner report, NHTSA ODI #11423596

Read all complaints on NHTSA →

Exterior paint chipping

STRUCTURE

3 NHTSA complaints · 2019-06 → 2021-05

“After only 3 years and less than 17,000 miles of driving, the soul red crystal metallic paint is chipping in many spots on the front of the body. There are at least 100 small chips on the hood, bumper, and front fenders. All of this occurred under normal driving conditions.”
— Owner report, NHTSA ODI #11418333
“AFTER LESS THAN A YEAR OF LEASING THIS VEHICLE, AN ABUNDANCE OF ROCK CHIPS HAVE SHOWN UP, MORE THAN ANY OTHER CAR I'VE LEASED. THIS PAINT SEEMS EXTREMELY SUSCEPTIBLE TO FOREIGN OBJECTS. (THIS WOULD BE THE SOUL RED COLOR THEY USE.)”
— Owner report, NHTSA ODI #11349287
“EXCESSIVE PAINT CHIPPING. KNOW PROBLEM. NORMAL, EVERYDAY DRIVING; NO ROCKY ROADS, GRAVEL TRUCKS, ETC.”
— Owner report, NHTSA ODI #11222395

Read all complaints on NHTSA →

Cracked cylinder head with coolant or oil leak

ENGINE

21 NHTSA complaints · 2022-06 → 2026-04

“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.”
— Owner report, NHTSA ODI #11734993
“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…”
— Owner report, NHTSA ODI #11709431
“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…”
— Owner report, NHTSA ODI #11634029

Read all complaints on NHTSA →

Sudden stall or loss of power while driving

POWER TRAIN

11 NHTSA complaints · 2019-06 → 2026-04

“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…”
— Owner report, NHTSA ODI #11728615
“The contact owns a 2018 Mazda 6. The contact stated that while merging onto a freeway the vehicle did not accelerate while pressing the accelerator pedal, lost automotive power. After turning the engine off and back on the vehicle operated as normal but later while driving…”
— Owner report, NHTSA ODI #11607569
“Was at a drive in window and car turned off and couldn't restart. Windows and lights would work but car wouldn't restart. Could of been driving and would of crashed. Had 3 people family in car.”
— Owner report, NHTSA ODI #11560045

Read all complaints on NHTSA →

Issues on other model years

  • 2015 Mazda Mazda6 →
  • 2016 Mazda Mazda6 →
  • 2017 Mazda Mazda6 →
  • 2019 Mazda Mazda6 →
  • 2020 Mazda Mazda6 →
  • 2021 Mazda Mazda6 →

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 21, 2026. Investigation data refreshed Jul 21, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2018 Mazda Mazda6 reflects Mazda's published service intervals. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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