The 2010 Mazda6 is a solid mid-size sedan, but the 2.5L I4 has a notorious oil consumption problem that can destroy engines if ignored, and the automatic transmission tends to develop cooler leaks that lead to overheating and expensive failures.
Catastrophic Oil Consumption (2.5L I4)
Common · high severity
Typical onset: 80,000-120,000 mi
Symptoms: blue smoke on startup or acceleration, low oil warning light frequent between changes, burning oil smell, spark plug fouling, rattling/knocking from engine
Fix: Piston ring design allows oil to bypass into combustion chambers. Short-term fix is frequent oil top-ups, but most need complete engine rebuild (20-25 hours) or short block replacement (18-22 hours). Some owners go through a quart every 500-800 miles before failure.
Estimated cost: $4,500-7,500
Transmission Oil Cooler Failure
Common · high severity
Typical onset: 70,000-110,000 mi
Symptoms: transmission slipping or delayed shifts, burnt ATF smell, transmission overheating warning, metal shavings in fluid, complete transmission failure if ignored
Fix: The external cooler lines corrode and leak, or internal cooler in radiator fails, leading to ATF contamination or starvation. Cooler replacement is 2-3 hours, but if trans is damaged from running hot/low, you're looking at rebuild (12-15 hours) or replacement.
Symptoms: clunking over bumps, steering wander or vague feel, uneven tire wear on inside edges, vehicle pulls to one side
Fix: Front lower control arm bushings crack and separate, especially in rust-belt climates. Mazda doesn't sell bushings separately, so you replace entire control arms. 2.5-3.5 hours per side. NHTSA recall addressed some batches, check VIN.
Estimated cost: $600-900 (both sides)
Transmission Mount Failure
Occasional · medium severity
Typical onset: 70,000-100,000 mi
Symptoms: excessive vibration at idle in Drive, clunk when shifting from Park to Drive/Reverse, driveline shudder on acceleration, visible engine movement in bay
Fix: Rear transmission mount rubber deteriorates and separates. Common on high-mileage examples or those with aggressive driving. Replacement is straightforward, 1.5-2 hours with proper support.
Estimated cost: $250-400
Fuel Filter Clogging (V6 Models)
Occasional · medium severity
Typical onset: 90,000-130,000 mi
Symptoms: rough idle or stumbling, hesitation under acceleration, hard starting when hot, check engine light with fuel trim codes
Fix: The 3.7L V6 has an in-tank fuel filter that clogs over time, especially with poor fuel quality. Requires fuel tank drop (3-4 hours) and pump module service. Often overlooked during diagnostics.
Estimated cost: $450-700
Passenger Airbag Inflator Defect (Takata)
Rare · high severity
Symptoms: airbag warning light, no symptoms until deployment, risk of metal shrapnel on deployment in high-humidity climates
Fix: Multiple NHTSA recalls for Takata airbag inflators that can rupture. Check VIN for open recalls — dealership will replace inflator at no charge. Non-negotiable safety issue, 1-2 hours labor covered by recall.
Estimated cost: $0 (recall repair)
Owner tips
Check oil level every 500 miles on 2.5L engines — if it's low between changes, budget for an engine rebuild or walk away
Inspect transmission cooler lines for corrosion and leaks annually; flushing ATF every 30k miles can extend trans life
Verify all Takata airbag recalls completed before purchase — four separate campaigns affect this generation
Replace transmission mount proactively around 80k miles to prevent driveline damage
Buy the V6 if you must, but avoid the 2.5L I4 unless oil consumption has been documented as minimal — engine rebuilds cost more than the car is worth.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 19V782000
2019-10-31 · EA15001
Mazda North American Operations (Mazda) is recalling certain 2007-2012 CX-7, CX-9, and 2009-2012 Maza6 vehicles. These vehicles had their passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Owners are advised not to drive their vehicles until the repair has been performed. Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. The recall began December 3, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 1317F. Note: This recall supersedes recalls 16V356 and 17V012.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 18V717000
2018-10-12 · EA15001
Mazda North American Operations (Mazda) is recalling certain 2014-2015 Mazda CX-9 vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A."
Additionally, unless covered in "Zone A," Mazda is recalling certain 2011-2013 Mazda6, 2011-2012 CX-7, and 2011-2015 CX-9 sold, or ever registered in the states of Arizona, Arkansas, Delaware, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia, or "Zone B."
Additionally, unless covered in Zone A or Zone B, Mazda is recalling certain 2010-2013 Mazda6, 2010-2012 CX-7, and 2010-2015 CX-9 vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C."
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate inflator, free of charge. The recall began November 9, 2018. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 1317F.
SUSPENSION:FRONT:CONTROL ARM · 18V631000
2018-09-14 · PE18006
Mazda North American Operations (Mazda) is recalling certain 2009-2010 Mazda Mazda6 vehicles sold, or ever registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, Wisconsin and the District of Columbia. The front cross member may corrode after exposure to road salt.
Consequence: Corrosion may weaken the mounting point for the passenger side lower control arm, unexpectedly changing the steering alignment and increasing the risk of a crash.
Remedy: Mazda will notify owners, and dealers will inspect the cross member and either install a side member and drain hose and apply wax to protect from rust, or install a drain hose and an improved front cross member, free of charge. The recall began March 18, 2019. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 2818I.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 18V018000
2018-01-09 · EA15001
Mazda North American Operations (Mazda) is recalling certain 2013 Mazda6 and CX-9 vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A."
Additionally, unless covered in "Zone A," Mazda is recalling certain 2010 Mazda6, CX-7 and CX-9 vehicles sold, or ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B."
Additionally, unless covered in Zone A or Zone B, Mazda is recalling certain 2009 Mazda6, CX-7, and CX-9 vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C."
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate inflator, free of charge. The recall began March 2, 2018. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 1317F.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 17V429000
2017-06-29 · EA15001
Mazda North America Operations (Mazda) is recalling certain 2009-2011 Mazda6, and 2007-2011 CX-7 and CX-9 vehicles. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.
Remedy: Owners are advised not to drive their vehicles until the remedy is performed. Mazda will notify owners, and dealers will replace the passenger frontal air bag inflator with an alternate inflator, free of charge. The recall began on August 30, 2017. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 1317F. Note: This recall supersedes recall 16V356 and all vehicles that were not remedied under that campaign are now covered by this one.
AIR BAGS:FRONTAL:SENSOR/CONTROL MODULE-INACTIVE · 16V594000
2016-08-11 · PE15029
Mazda North American Operations (Mazda) is recalling certain model year 2009-2010 Mazda6 vehicles manufactured February 4, 2008, to December 3, 2009. The protective coating may not have been properly applied to the air bag control unit (ACU) and, as a result, moisture may damage the unit causing it to malfunction.
Consequence: Failure of the ACU would illuminate the air bag warning light and prevent the air bags from deploying in the event of a crash, increasing the risk of injury.
Remedy: Mazda dealers will replace the ACU, free of charge, however parts are not currently available. The recall began June 2017. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 9816H.
FUEL SYSTEM, GASOLINE · 14V114000
2014-03-11
Mazda North America Operations (Mazda) is recalling certain model year 2010-2012 Mazda6 vehicles manufactured September 14, 2009, through May 2, 2011, and equipped with 2.5L engine. In the affected vehicles, spiders may weave a web in the evaporative canister vent hose, blocking it and causing the fuel tank to have an excessive amount of negative pressure.
Consequence: Negative pressure could cause the fuel tank to crack resulting in a fuel leak, increasing the risk of a fire.
Remedy: Mazda will notify owners, and dealers will reprogram the powertrain control module and inspect and clean the canister vent line. If a web was found in the line, the fuel tank and check valve on canister vent line will be replaced. These repairs will be done free of charge. The recall began on April 30, 2014. Owners may contact Mazda at 1-800-222-5500. Mazda's recall number associated with this campaign is 7214C.
LATCHES/LOCKS/LINKAGES:DOORS:LATCH · 13V425000
2013-09-24 · PE13015
Mazda is recalling certain model year 2009-2013 Mazda6 vehicles manufactured February 4, 2008, through August 24, 2012. The door latch mounting screws may become loose.
Consequence: If all three door latch mounting screws become excessively loose the door latch mechanism would not engage and the door might open while the vehicle is in motion increasing the risk of accident or injury.
Remedy: Mazda will notify owners, and dealers will apply a thread locking adhesive to the door screws and retorque them, free of charge. The recall began on October 29, 2013. Owners may contact Mazda at 1-800-222-5500. Mazda's recall number is 7013I.
MAZDA IS RECALLING CERTAIN MODEL YEAR 2009-2010 MAZDA6 VEHICLES MANUFACTURED FROM APRIL 8, 2008, THROUGH FEBRUARY 8, 2010. A CERTAIN TYPE OF SPIDER MAY WEAVE A WEB IN THE EVAPORATIVE CANISTER VENT LINE AND THIS MAY CAUSE A RESTRICTION IN THE LINE. IF THIS OCCURS, THE FUEL TANK PRESSURE MAY BECOME EXCESSIVELY NEGATIVE WHEN THE EMISSION CONTROL SYSTEM WORKS TO PURGE THE VAPORS FROM THE CANISTER.
Consequence: AS THE CANISTER IS PURGED REPEATEDLY DURING NORMAL OPERATION, THE STRESS ON THE FUEL TANK MAY EVENTUALLY RESULT IN A CRACK, POTENTIALLY LEADING TO FUEL LEAKAGE AD AN INCREASED RISK OF FIRE.
Remedy: DEALERS WILL INSPECT AND CLEAN UP THE CANISTER VENT LINE, AND INSTALL A SPRING TO PREVENT THIS TYPE OF SPIDER FROM ENTERING THE VENT LINE. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN ON OR BEFORE MARCH 25, 2011. OWNERS MAY CONTACT MAZDA CUSTOMER ASSISTANCE CENTER AT 1-800-222-5500.
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