2004 Mazda Mazda6 Mazda Mazda6 2004

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2004 Mazda Mazda6 repairs by problem area

Engine (55%)

Transmission and Drivetrain (8%)

Brakes and Traction Control (5%)

Suspension and Steering (9%)

Electrical and Air Conditioning (14%)

Paint, Rust, Leaks, Rattles, and Trim (6%)

Other (3%)

Chart based on 266 repairs.
See TSBs and recalls for the 2004 Mazda Mazda6.

2004 Mazda Mazda6 repair cost distribution

$2500+ (3%)

$1000 - $2499 (8%)

$500 - $999 (17%)

$100 - $499 (38%)

< $100 (34%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 227 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2004 Mazda Mazda6

Engine not specified

Mazda Mazda6 in Ontario, Canada
May 2010 - Jan 2011
Jun 2010

136400 mi

C $650
starter 
Jan 2011

C $500
Replaced alternator. Transmission was on its way out. Brake lines needed to be fixed. Rear sport suspension cracked. Muffler needed to be repaired. AC gone. 
Mazda Mazda6 in Ohio, United States
Dec 2014 - Jan 2015
Jan 2015

132000 mi

US $500
Water pump belt tensioner siezed up, causing the engine to over heat. Repair included replacing the tensioner and belt as well as performing a cooling system flush. 
Mazda Mazda6 in Ontario, Canada
Jun 2011 - Jul 2011
Jul 2011

170500 mi

C $3000
transmision has started slamming into gear randomly, also neutral safety switch started to act up, then doors auto locked keys in ignition.this car has been very reliable but has had some rust out issues above rear wheels and windows 

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2004 Mazda Mazda6 4dr Wagon

220-horsepower 3.0L V6 5-speed shiftable automatic FWD

Mazda Mazda6 in Ontario, Canada
Aug 2008 - Mar 2010
Oct 2008

45880 mi

C $300
Oil pan cover. 
Mazda Mazda6 in British Columbia, Canada
May 2011 - Jun 2014
Jun 2012

54560 mi
Worn out coil boots were arcing causing bad hesitation and juddering at most RPM. Replaced coil boots and the engine is smooth. Mechanic replaced spark plugs as well. 
Oct 2012

57640 mi

C $200
New front and rear pads, new rear disks and calipers.  Transmission leak due to loose gear clamp 
Jan 2013

60960 mi

C $1200
Diagnosing/attempting fix of worsening misfire. Replaced 3 rear coil packs, MAF, new intake gasket, etc... This helped alot, but did not resolve the issue completely. Transmission started leaking again with fluid hitting the exhaust manifold and causing burning smell. Replaced tranny cooler hose. 
Feb 2013

61460 mi
I ended up replacing the coil packs on the front bank and that resolved the misfire. 
Jun 2013

63240 mi

C $485
The crankshaft seal was weaping. No oil noticeable on garage floor. Seal replaced. 
Apr 2014

69440 mi

C $2700
Weaping water pump Struts and shocks Oil pan gasket leaking 
Mazda Mazda6 in Ontario, Canada
Nov 2010 - Jun 2013
Apr 2011

70680 mi

C $550
engine light came on. sensor and hose required replacing. also got rear brakes replaced due to wear 
Dec 2011

79980 mi

C $100
Electrical socket for turning signal 
Oct 2012

89260 mi

C $1000
Leaking gaskets and oil pan seal 
Jan 2013

92980 mi

C $100
Light bulb socket for turn signal failed 
Mazda Mazda6 in Ontario, Canada
Feb 2010 - Mar 2012
Jul 2011

80080 mi

C $1100
Rear seal leak-had to be replaced. 
Mar 2012

86800 mi

C $50
One fog light and one headlight had to be replaced Car would not start. Car needed to be towed and starter replaced 
Mazda Mazda6 in Ontario, Canada
Sep 2008 - Jan 2019
Nov 2008

57660 mi

C $400
replaced right lower control arm plus alignment 
Nov 2009

70432 mi
Replaced front catalytic converter due to a crack at the exhaust manifold (covered under the emission warranty) 
Jan 2010

71920 mi

C $20
Outer CV Joint boot broke, replaced part. 
May 2010

75500 mi

C $400
A/C line rubbed through at the point of contact with the ABS bracket. Installed updated line that doesn't contact with the A/C bracket.  
Aug 2010

80160 mi

C $100
Check engine with the code p0305 came ON - cylinder 5 misfires. Replaced ignition coil 
Aug 2011

95660 mi

C $200
Front wheel bearing became noisy. Replaced the front wheel bearing myself. Paid for parts only around $200. 
Mar 2012

102920 mi

C $150
Oil leak from the oil pan 
Mar 2018

150040 mi

C $640
replaced front brakes 
Mazda Mazda6 in Newfoundland / Lab., Canada
Nov 2008 - Mar 2012
Aug 2009

44640 mi

C $150
TSB 60 for Fan Operation. Previous owner never had repaired this. 
Oct 2009

46500 mi

C $100
During days of heavy rain, the Radio and climate systems would not shut off, even with key removed. Once car dries out everything is normal again. 
Nov 2009

47120 mi

C $900
Random Electrical Problems, Dealer located electrical module that was corroded, also determined a firewall grommet was loose that allowed water to drain onto electrical module. Repair Shop located misfitting gasket that was entry point for water. Caused rust out of a control module, which was causing various electrical problems. 
Feb 2010

49600 mi

C $90
Heat Shield rusting off on Catalyic Convert. Replace Catalytic Converter Covered under Emission Warranty Car had rattling noise and brake grinding. Shop found some rust on brake, cleaned and lubricated. Rattle was rusted heatshield on catalytic converter. Catalytic converter replaced under warranty. 
Nov 2010

58900 mi
Cracked exhaust manifold, part replaced 
Sep 2011

67580 mi

C $35
Check engine light was after returning home from Vacation. Code check indicated engine misfire. Rough start first time after vacation. No other indications of a misfire since that time. 
Nov 2011

68820 mi

C $150
Rear Hatch latch was corroded and was stiff in operation. Hard to open or lock sometimes. Parts replaced, latch works fine now. 
Mazda Mazda6 in Minnesota, United States
Jun 2009 - Apr 2011
Nov 2009

77600 mi

US $130
Interior door latch became disconnected. 
Apr 2011

99000 mi
Owner identified oil leaks. Vehicle was brought to mechanic and vehicle needed new front and rear main seals and oil pan gaskets. Decided to sell vehicle. 
Mazda Mazda6 in Texas, United States
May 2012 - Aug 2016
Feb 2012

70000 mi

US $65
Engine idled roughly and engine light came on. Replaced ignition coil. 
Mar 2012

75000 mi

US $65
Engine idled roughly and engine light came on. Replaced ignition coil. 
Nov 2012

85800 mi

US $260
When weather got warm and we would turn wheel or go over bumps, car made clunking noise in front. It turned out to be worn inner bushings in lower front control arm. Could've just replaced inner bushings but couldn't tell if others are bad. 
Sep 2014

103000 mi
Engine was idling rough and engine light came on. Higher RPMs did not have problems. OBD reading said error code was P0171 and P0174, which means engine banks 1 and 2 are too lean. I used cleaner on the MAF and replaced sorta cracked intake. 
Oct 2014

104000 mi
Engine was idling rough and engine light came on. Higher RPMs did not have problems. OBD reading said error code was P0171 and P0174, which means engine banks 1 and 2 are too lean. Turned out to be cracked PCV hose by firewall. Add fuel system cleaner. 
Jan 2016

92000 mi

US $13
Engine idled rough. Check engine light was on. ECU code says bank 1 and 2 are lean and cylinder 5 misfire. Found PCV elbow hose is cracked. Replaced and engine idles better. 
Jun 2016

118000 mi

US $127
Replace battery. 
Mazda Mazda6 in California, United States
Oct 2005 - Jun 2011
Oct 2005

10005 mi
Replaced defective cooling fan control module under warranty 
Mazda Mazda6 in Kentucky, United States
Feb 2015 - Nov 2016
Jun 2015

117000 mi

US $220
A clip had broken off a cooling line and leaked coolant. The radiator was bone dry. Had to replace the clip and refill the coolant. No other issues found. 
Aug 2015

118000 mi

US $300
Drivers side back passenger window motor would just stop when rolling up the window. It would go down all the way but would stop about 1 1/2 inches from the top. Replaced motor everything back to normal. Headliner was falling off. 
Jul 2016

123500 mi

US $1200
Water pump seized and took out Serpentine Belt. All had to be replaced along with new idler tensioner. 
Mazda Mazda6 in Wisconsin, United States
Jun 2013 - Jun 2016
Jul 2013

114000 mi

US $20
Rattling under dvr/passenger seats when car started in morning. Goes away as car is driven. Heat shield was rusted, hitting exhaust. Garage removed Heat shield. 
May 2016

117000 mi

US $2500
Engine replacement 
Mazda Mazda6 in Alberta, Canada
Oct 2015 - Jan 2020
Dec 2017

146475 mi
Sucking noise in engine bay. Wasn't getting a blowjob so it was something else. Used incense stick to find source of leak, then to relax. Found source of leak, cause was a tight c clamp that deteriorated a hose along the pinch. Wrapped it with electrical tape I use for BDSM. I need more tape. 
Aug 2019

161200 mi

C $30
AC clutch not engaging. Replaced AC condenser. 
Mazda Mazda6 in Washington, United States
Sep 2014 - Mar 2016
Oct 2014

87000 mi

US $200
Stalling. Intermittent at first, then got worse. No code at first, then misfire code. First diagnosed as ignition coil, then fuel pump. Wheel speed sensor failed 
Jan 2016

87000 mi

US $60
Intake hose cracked. Led to lean burn fault. 
Mazda Mazda6 in British Columbia, Canada
Dec 2014 - Jun 2017
Jan 2015

101700 mi

C $700
Main bearing front 
Mazda Mazda6 in Texas, United States
Mar 2016 - Aug 2016
Aug 2016

146000 mi

US $500
coolant got into engine. Just after I replace coils and plugs. Engine is dead. Car was scrapped 

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2004 Mazda Mazda6 4dr Wagon

220-horsepower 3.0L V6 5-speed manual FWD

Mazda Mazda6 in North Carolina, United States
Jun 2010 - May 2012
Oct 2011

88000 mi

US $400
Car overheated. Radiator hose replaced. Another part (air intake hose?) also replaced since it looked like it was about to fail, per dealer. 
Jan 2012

US $350
clutch stiff. hydraulic fluid replaced clutch stiff. master and slave cylinders replaced. still very stiff. driver seat moving slightly when taking corners. bolts tightened. still moving slightly. 
Mazda Mazda6 in California, United States
Nov 2014 - Apr 2017
Dec 2014

186000 mi

US $200
Coils and plugs Intake pipes replaced 
Dec 2015

197000 mi
Audio-HVAC MFD failed. The uP has poor soldering on it to the pcb so I disassembled and VERY carefully re-soldered all connections. I understand that this is a function of the low lead RoHS construction and heat causes embrittlment and breakage. 
Apr 2017

215000 mi

US $40
Cooling fans running all the time 
Mazda Mazda6 in Alberta, Canada
May 2010 - Aug 2012
Jun 2010

55180 mi

C $400
sunroof shattered while in the tilt position. Part arrived next day from dealer, installed, adjusted, good as new! 
Dec 2010

71920 mi

C $700
front wheel bearing and CV shaft replaced on driver's side due to whirring noise coming from bad bearing. 
Apr 2011

81220 mi

C $230
Front passenger side wheel finally was bad enough that replacement was neccessary. Wheel bearing was supplied by owner and installed by private repair shop. 
Oct 2011

100440 mi

C $90
Coil pack on Cylinder 6 went bad...had been showing symptoms every time the relative humidity took a jump...would start misfiring. Flexible rubber clutch hose between master and slave cylinders burst 
Mar 2012

112220 mi

C $500
Cel displaying catalyst issue. Replaced fouled spark plug, ignition coil, and O2 sensor. Front struts replaced with Bilstein HD's 
Apr 2012

113460 mi

C $65
CEL still on with P0431 code replaced second, downstream O2 sensor...CEL light came on again after 3 days (nothing more to replace other than pre-cat). 
Aug 2012

117800 mi

C $800
after replacing all other components, the cat had to finally be replaced. I supplied the replacement cat and paid labor for the shop to install. 
Mazda Mazda6 in British Columbia, Canada
Dec 2010 - Sep 2012
Jul 2011

61380 mi
Broken engine mount replaced. 
Mazda Mazda6 in New Jersey, United States
Feb 2008 - Oct 2012
Mar 2008

58000 mi

US $40
Check engine light attributed to loose gas cap. 
Sep 2009

94000 mi

US $600
Replace struts (F&R) 
Oct 2009

94000 mi

US $280
Check engine light on; needed a sensor replaced Replaced rear valve cover gasket to repair significant oil leak 
Apr 2010

105300 mi
Heatshield rattle, clamped at no-charge while in for OLF. 
Aug 2010

112000 mi

US $550
Main bearings worn out and replaced TSB on check engine light on related to a minor leak in evap system; shop advised that dealer will need to clear the code from memory before leak can be fixed & car will pass NJ emissions testing in NOV 
Feb 2011

124000 mi

US $150
Backup light switch failed & successfully replaced 
Apr 2012

144000 mi

US $120
Thermostat failed, car overheated, pressure buildup blew out sensor. Thermostat & sensor replaced 

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2004 Mazda Mazda6 4dr Sedan

220-horsepower 3.0L V6 5-speed shiftable automatic FWD

Mazda Mazda6 in Minnesota, United States
Jan 2013 - Oct 2016
May 2013

187000 mi

US $600
Car died suddenly, had it towed in. Diagnosed and had MAF sensor replaced. 
Sep 2013

197000 mi

US $127
Vacuum hose was broken. Replaced and was as good as new. 
Dec 2013

206000 mi

US $14
Headlight went out, bought a new one but didn't have the time/place to install it. Valvoline did it for about $14 so I guess I'll go back next time. Bummer was about 3 days later the other one burned out :( Second headlight replaced a few days later. 
Sep 2014

219000 mi

US $650
During previous oil change the plug had been cross-threaded and when they took it out they stripped out the pan entirely necessitating a pan replacement. Have no proof of who did the last oil change so I had to eat the cost. 
Jan 2015

US $185
Check Engine Light came on. Indicated B2S2 oxygen sensor is bad. Chose not to repair at this time. Also had brakes checked - OK. 
Nov 2015

237000 mi

US $850
Replaced front struts and two tires. 
Sep 2016

244000 mi

US $994
Replaced coil pack Right front suspension components replaced Oxygen sensor went bad 
Oct 2016

244000 mi
needed a complete power steering rebuild. Too costly to repair for value of the car. Too bad, it had 246K miles on it and I was shooting for a quarter of a million. 
Mazda Mazda6 in Washington, United States
Jun 2013 - Jun 2015
Aug 2013

126700 mi

US $90
Mass air intake hose had to be replaced. 
Mazda Mazda6 in Ontario, Canada
Jun 2012 - Jan 2015
Jul 2012

62620 mi

C $99
P431 code; scanned with ScanXL ElmScan tool at home and O2 sensor readout showed a failed bank 2 catalytic converter. Was replaced under warranty (which will run out at then end of this month) 
May 2013

70540 mi

C $120
The a few ignition coils needed to be replaced, and I also changed a fuel injector. The engine runs like brand new now. No misfires at near max speed. 
Sep 2013

76260 mi

C $100
I suspect one of the welds in the rear pillars above wheels broke. Broken weld noises are so annoying and so hard to fix that some people sell the cars. Best Play: I made a cast around the weld out of expanding foam to deaden the sound. : / 
Mar 2014

84940 mi
The front and back brakes were seizing and working erratically. The car would pull to one side a highway speeds. Passenger front brake caliper bolt fell out 3 weeks after the dealer did the work. The car would have the right wheel jam when reversing, and it would grind the rim when going forward. 
May 2014

87080 mi
All 4 control rods that hold the wheels have bushings that were not designed to last the life of the car. It came time for all of this car's bushings to crack and require replacement. The bushings are inseparable from control rods in model. The engine is leaking oil. Potentially due to an incorrect installation of engine gaskets at a previous time the car was repaired (before I owned it). But it is not so bad that it is dripping on floor. I'm monitoring oil level monthly. 
Jul 2014

89160 mi

C $179
The transmission on this car overheats and destroys the oil in 50,000 km. I used Seafoam Transmission cleaner, and then had the fluid drained and refilled to resolve atrociously slow shifting. 
Aug 2014

91140 mi

C $250
The belt tensioner is dying and needed to be replaced, a lot of squealing going on. The squealing is still around, but not as bad as before. The A/C pulley was also making a lot of the noise and needed lubrication. 
Sep 2014

91760 mi

C $1000
Passenger side CV joint makes noise, and is loose. 
Dec 2014

91760 mi

C $800
Replaced A/C compressor, recharged A/C, and changed serpentine belt from aftermarket one to an OEM to eliminate squealing. 
Jan 2015

C $1000
Camshaft position retarded on bank 1. Car stalls while driving. Cylinder 1 too lean, cylinder 4 rich; random multi-cyclinder misfire. Engine work done before I bought it (I found out when I took it to Mazda dealer). Will need new engine. Sold. 
Mazda Mazda6 in California, United States
Nov 2014 - Sep 2016
Jan 2015

92500 mi

US $868
Water pump had a leak and was replaced. Also replaced bypass hose as it was swollen. Oil pan was leaking fluid. Leak was sealed with a sealant. 
Mazda Mazda6 in Texas, United States
Mar 2012 - Jun 2013
Jun 2013

99000 mi

US $100
Replaced battery as it died. Old battery was 2 years old. Not the car's fault 
Mazda Mazda6 in Massachusetts, United States
Jan 2011 - Aug 2011
Feb 2011

132000 mi

US $100
Left low beam out, right intermittent. Replaced both bulbs. 
Apr 2011

134500 mi

US $200
Check engine light after emissions inspection. 
Mazda Mazda6 in Oklahoma, United States
Aug 2007 - May 2015
Jan 2008

30000 mi
Bad seal on gas cap. Gas cap replaced. Problem solved. 
Mar 2008

31000 mi
Headliner coming loose. New Headliner assembly ordered. I was notified the headliner ordered (after first appointment) delivered to dealer and I scheduled repair for a Monday. Left the car and received loaner. When the headliner was removed from packaging, it had damage. Dealer ordered a new one. Because... New headliner arrived. Brought car in for repair on Monday. New headliner delivered damaged. Another one ordered and car left at shop. Replacement liner received on Weds and car returned. 
Apr 2011

58300 mi
Intermittent hesitation when accelerating. No CEL 
May 2012

67000 mi

US $500
Bad coil Replaced Air Intake hose (containing multiple sensors) Replaced Ignition Coil on cylinder 5. 
Jul 2012

68500 mi

US $100
Replaced failed engine mount 
Jan 2013

74000 mi

US $1348
Had to replace coils. Multiple oil leaks requiring replacement of three gaskets. Driver side front door latch malfunction. Could not open door. 
Aug 2013

77000 mi

US $300
Headliner was starting to hang 
Mar 2014

82000 mi

US $1125
Bad CV boot. Had to replace front axel. Frozen to steering knuckle. Had to replace steering assembly. Bad fan control module 
Mazda Mazda6 in Michigan, United States
Nov 2008 - Jan 2009
Dec 2008

79000 mi

US $400
The ignition coil went bad and it needed to be replaced as well as all the spark plugs. 
Mazda Mazda6 in Louisiana, United States
Aug 2007 - Mar 2010
Sep 2007

33000 mi
Car wouldn't go into reverse. The dealership repaired the transmission under warranty and gave us a loaner while they had it in the shop. 

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2004 Mazda Mazda6 4dr Sedan

220-horsepower 3.0L V6 5-speed manual FWD

Mazda Mazda6 in Georgia (nation)
Dec 2015 - Dec 2016
Feb 2016

61280 mi

$270
Check engine light was on, had to replace spark plugs and ignition coils. 
Jun 2016

84320 mi

$650
Hesitation under load, uneven idle. Valve cover gaskets & spark plugs replaced. 
Dec 2016

84320 mi

$500
Hesitation under load, uneven idle. Valve cover gaskets & spark plugs replaced again. Check engine light came back on and problem persists. 
Mazda Mazda6 in New York, United States
Jul 2006 - Jun 2010
Feb 2006

30000 mi
Check Engine Light - traced to faulty fuel filler cap. 
May 2009

79000 mi

US $59
Noticed there was no cold air blowing with or without A/C on. Dealer diagnosed and found a cold-air return door stuck closed. Door was opened and reset, and hinges were lubed. 
Sep 2009

83000 mi

US $74
Car was losing oil at the rate of 1 quart per 800 miles, with no signs of leaks or burnoff in exhaust. Dealer diagnosed a "sticking" PCV valve, which partially worked. Valve was replaced. 
Mazda Mazda6 in North Carolina, United States
Jul 2015 - Apr 2017
Aug 2015

157200 mi

US $850
Throttle body replacement-sensor went bad and the car had no fueling power. Over heating after throttle body was changed. New thermostat still over heating. Hose leaking and other all connectors for coolant. It leads to the throttle body. 
Feb 2016

166000 mi

US $100
Breather hose from the intake to the motor. PCV valve 
Apr 2017

196000 mi

US $233
Burning oil, oil in spark plug well #1. Valve cover gasket replacement. Plugs and boots replaced turn signal bulbs Squealing front brakes replace front and rear pads. 
Mazda Mazda6 in California, United States
Mar 2008 - Aug 2009
Sep 2008

57000 mi

US $10
Seat back bolster ripped into two pieces, self repaired by removing leather upholstery and glued back together 
Dec 2008

60000 mi

US $10
Previously repaired seat bolster ripped again. 
Mazda Mazda6 in Texas, United States
Nov 2004 - Mar 2010
Nov 2004

2500 mi
Vehicle was missing a rubber gasket in the firewall on the passenger side that allowed water to leak in the passenger compartment when it rained and pool in the right rear passenger footwell. This was fixed under warranty - however it took some convincin 
Aug 2006

18000 mi
Single disc CD player would pop repeatedly while trying to load a CD. The CD player was replaced under warranty. 
Mazda Mazda6 in Washington, United States
Jul 2007 - Mar 2010
Mazda Mazda6 in Oklahoma, United States
Feb 2009 - Jun 2011
Sep 2009

86000 mi

US $100
Front passenger wheel bearing began making noise on labor day. It took 5 days to repair because of seized lower ball joint, working on it off and on. Repair was completed on Sept. 30. Took 1 hour to reassemble. 
Mazda Mazda6 in California, United States
Jun 2008 - Jul 2016
Apr 2013

111700 mi

US $129
CEL, slight hesitation/loss of power. Air intake hose was cracked. I replaced it. The part was the only cost. 
Sep 2013

118000 mi

US $300
Replaced broken motor mount. 
Mar 2014

124000 mi

US $126
Blue smoke from exhaust. Appears to have been a blocked PCV valve at this time. 
Sep 2014

132000 mi

US $350
Replaced worn window motor 
Mazda Mazda6 in Texas, United States
Jul 2011 - Jun 2018
Oct 2011

109000 mi

US $20
Got check engine light with engine stuttering, rough idle. Noted simultaneous P0171 & P0174 DTC codes. Discovered "sucking sound" near intake with engine running. PCV hose was cracked/collapsed. Replaced PCV hose and valve. 
Mar 2012

116000 mi
Headliner loose (6-8" diameter) near corner rear window on both sides. Used DIY spray headliner glue. Frequently ride with sunroof/rear windows open and also park car outside during hot Texas summer days - possible contributing factors. 
Sep 2013

139000 mi

US $16
Oil pressure switch leaking. 
Feb 2014

145000 mi

US $300
Leather seats: Front driver seat side bolster cushion worn through. Can feel steel support through leather seat cover when driving. Have not repaired yet. Estimated cost is $300 for used salvage parts + labor DIY (if I can find one). 
Jun 2014

150000 mi

US $20
Repaired right side seat bolster cushion of driver's seat which had cracked from top-to-bottom such that the metal frame was causing discomfort while driving. Crack was approximately 18 inches long. Glued and stitched together. 
Sep 2014

154000 mi

US $300
Replaced remaining engine mounts. Backup lamp switch (on manual transmission) failed/intermittent. 
Nov 2014

156600 mi

US $25
Belt tensioner froze, plastic pulley disintegrated. Followed suggestions from other owners and removed the belt tensioner completely, and replaced the belt with a stretch-to-fit belt directly between water pump and drive. 
Feb 2015

161000 mi

US $20
Replaced battery tray, split where battery hold-down attaches. Replaced lower dog-bone engine mount. 
Oct 2015

170200 mi

US $417
Grinding metal-on-metal sound coming from driver's side front. Replaced driver's side half-shaft and wheel bearings. 
Dec 2015

171000 mi

US $120
Radiator leaking from top joint between plastic/metal. 
Mazda Mazda6 in British Columbia, Canada
Aug 2008 - Aug 2009
Jan 2009

68820 mi
Excessive oil consumption. Dealer said it was leaking valve cover gasket. Turns out that the PCV valve failed as well. Ordered PCV Valve. Took to friend who owns shop to replace PCV Valve 
Feb 2009

69440 mi

C $400
Valve cover gasket was leaking. Changed sparkplugs as well since Intake Manifold had to be removed. 
Apr 2009

71300 mi

C $10
Drain bolt seal was worn and was no longer effective. Replaced drain bolt. 
May 2009

72540 mi

C $250
Oil pan gasket was leaking again. (was fixed under warranty in Dec 07). Mazda said it's out of warranty now so they won't do anything. Bought redesigned oil pan and replaced instead of replacing old gasket that will die again in a year. 
Mazda Mazda6 in Maryland, United States
Apr 2009 - Jun 2011
Jun 2009

120000 mi

US $120
Lower engine mount failed. The rubber had been ripped through. A replacement (aftermarket) mount was installed that has solid urethane instead of rubber. 
Nov 2009

126000 mi

US $300
Pulley for the water pump seized. Belt and pulley replaced. Water pump was ok. 
Apr 2010

135500 mi

US $500
Oil Leaks.  
Aug 2010

138000 mi

US $1384
Precat (exhaust) needed replacing. 
Mazda Mazda6 in Texas, United States
Nov 2010 - Nov 2017
Jun 2011

76000 mi
Replaced left outer CV joint boot 
Jul 2016

102300 mi

US $600
CEL P2135 read about the issue and decided to replace the throttle body due to a TSB issued around 2006 
Oct 2017

104000 mi

US $4000
Engine failed. Cause unknown. 
Mazda Mazda6 in Massachusetts, United States
Feb 2009 - Mar 2010
Dec 2009

105000 mi

US $165
Replaced battery, removed rattling heat shield 

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2004 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 5-speed manual FWD

Mazda Mazda6 in Ontario, Canada
Jul 2007 - Mar 2010
Mar 2008

68820 mi

C $110
Engine light on - took to mechanic, they hooked up to computer and said fuel line problem (losing pressure) that needs more investigation to fix. 3 days later light went off on it's own. 
Mazda Mazda6 in Virginia, United States
Sep 2008 - Mar 2009
Jan 2009

67000 mi

US $500
Muffler had to be replaced due to rust. 

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2004 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 4-speed shiftable automatic FWD

Mazda Mazda6 in Wisconsin, United States
May 2010 - Aug 2014
Nov 2010

71000 mi

US $260
purge solenoid replaced, bad vacuum hose 
Mar 2012

97000 mi

US $655
Fuel pump 
Mazda Mazda6 in Idaho, United States
Apr 2016 - Apr 2017
Oct 2016

135000 mi

US $400
The wheel studs snapped off due to the stock wheel hubs tight fit to the wheel center, studs were replaced and wheel centers were sanded for clearance. 
Mazda Mazda6 in British Columbia, Canada
Jul 2007 - Dec 2011
Sep 2007

47120 mi
Erratic idle speed, 700 - 2000 rpm. Fixed by software refresh/updates 
Jul 2009

71920 mi
Erratic RPMs at idle and low speed driving 
May 2010

82460 mi
slightly noisy tensioner on serpentine belt. Tensioner and belt replaced under mazda extended warrnty 
Jul 2011

102300 mi

C $388
Left front wheel bearing replaced 
Mazda Mazda6 in Washington, United States
Nov 2017 - Jun 2018
Dec 2017

90000 mi

US $500
Repaired leaking air hose, manifold etc. Engine light on. 
Mazda Mazda6 in South Carolina, United States
Apr 2015 - Dec 2017
Apr 2015

162000 mi

US $150
Transmission fluid leakage fixed 
Mazda Mazda6 in Alberta, Canada
Oct 2008 - Jun 2011
Sep 2010

79980 mi

C $600
alternator failed, replaced. battery replaced. 
Mazda Mazda6 in Victoria, Australia
Oct 2009 - Aug 2012
Aug 2012

82460 mi
When traded needed a few things, including suspension rubber, door electronics, and boot struts. 
Mazda Mazda6 in Hawaii, United States
Apr 2014 - Jul 2014
May 2014

86000 mi

US $4000
Have been taking the car to the dealer for over a year now same problem occurs every time the runs fine then starts to shudder and wont accelerate you have to shut the car off and start it again 
Jul 2014

86000 mi

US $2000
Turned out to be electronic throttle system sensors a an b plus a short in wire harness this has stopped intermittent surge and having to shut off car and restart 
Mazda Mazda6 in Washington, United States
Sep 2008 - Sep 2013
Jun 2009

49000 mi

US $80
Both key fobs stopped working. Neither would unlock or lock the car electronically anymore so I had to resort to using the key. Supposedly the circuit boards inside them were fried but I (the owner) have no idea how that occurred. Ordered new key fobs. 
Mazda Mazda6 in Kentucky, United States
Jun 2014 - Jun 2015
Feb 2015

145100 mi

US $850
Car wouldn't start. Alternator was replaced. 
Jun 2015

148000 mi

US $100
AC Not working AC Recharge, replace valve Driver window wouldn't move 
Mazda Mazda6 in Wisconsin, United States
Jun 2014 - Nov 2017
Jan 2014

143000 mi

US $330
Wouldn't start in cold weather. Camshaft found to have jumped position due to TCS-induced overrev in deep snow/ice. Camshaft repositioned, problem has not recurred. 
Jul 2016

189069 mi

US $181
Fluid leak, check engine and AT lights on. Transmission lines broken under fan shroud. Repaired, refilled with fluid. Unknown cause, but problem solved. Fluid leak, check engine and AT lights on. Transmission lines broken under fan shroud. Repaired, refilled with fluid. Unknown cause, but problem solved. 
Nov 2017

196000 mi

US $20
Stalled at red light and could not be restarted. OBD indicated fuel pressure regulator failure. Part replaced, but car still would not start. Oil discovered in coolant, rust already obvious, car was scrapped. It was a very good car. 
Mazda Mazda6 in Louisiana, United States
Mar 2012 - Apr 2012
Apr 2012

126000 mi

US $218
Battery was dead two mornings ago, I jumped it off with my truck, and the alternator light, AT light and check engine light came on. Tried to drive the car but it would hardly move . TCM fuse was blown, battery showed fault, alternator bad. 
Mazda Mazda6 in Ontario, Canada
Aug 2008 - Apr 2013
May 2009

133300 mi

C $3000
Engine replaced with used engine due to impending failure of connecting rod (causing loud internal knocking noise) - same diagnosis from two mechanics 
Nov 2009

148800 mi

C $630
Also repaired 1 seized caliper pin. 
Apr 2013

197160 mi
No compression cylinder 3. Still running but mechanic suspects blown rings. Sold as is. 
Mazda Mazda6 in Michigan, United States
Dec 2016 - Jul 2017
Jun 2017

112000 mi
Muffler broke off. Extensive rust on exhaust system. I decided repair was not worth the cost, given the age and value of the car. 
Mazda Mazda6 in California, United States
May 2016 - Oct 2017
Sep 2017

78000 mi

US $150
Replace Alternator 
Mazda Mazda6 in Louisiana, United States
Sep 2013 - Sep 2013
Sep 2013

154000 mi
Replaced ballbearing Front passenger side rotor back shield was touching the rotor making noises. Adjusted the shield and used some silicone to hold the shield in place. 
Mazda Mazda6 in Saskatchewan, Canada
Oct 2010 - May 2011
Feb 2011

81220 mi

C $90
power steering hose leaking, mechanic cut off damaged part and reconnected 
Mazda Mazda6 in Ontario, Canada
Mar 2016 - Apr 2017
Jan 2017

184140 mi

C $250
Replaced driver seat. Left side deterioration. Ceiling collapsed on the edges. 
Mazda Mazda6 in Ontario, Canada
Aug 2008 - Jun 2012
Sep 2011

68200 mi

C $300
Check engine light was on, vacuum hose had cracked. It was replaced. 
Mazda Mazda6 in Ohio, United States
Jun 2010 - Jan 2018
Sep 2011

96000 mi

US $340
Engine thermostat replaced 
Nov 2011

96000 mi

US $250
Left rear brake caliper shot. Replaced caliper and both rear brake pads. 
Jan 2018

158000 mi

US $299
Timing chain replaced. Engine warning light still on however. 
Mazda Mazda6 in California, United States
Aug 2010 - Jun 2011
Sep 2010

120000 mi

US $500
hose connected to pcv valve. 2 dollar part, 500 labor to get to the stupid thing! 
Mazda Mazda6 in Michigan, United States
Nov 2010 - Mar 2011
Mar 2011

110000 mi

US $2000
Slipped out of gear while driving, drove home in 2nd gear, but drove fine to shop later. Shop rebuilt main valve body twice insisting that's the problem. 5 wks later got car back supposedly fixed. Wrong. Jerking and rpm's all over the place Shop #2 basically rebuilt entire trans. Rebuild includes torque converter, clutches, band, filter, pump cover, and replaced the valve body shop #1 supposedly rebuilt twice. Valve body came with solenoids. 

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2004 Mazda Mazda6 4dr Hatch

220-horsepower 3.0L V6 5-speed shiftable automatic FWD

Mazda Mazda6 in California, United States
Oct 2016 - Dec 2017
Oct 2016

85000 mi

US $1500
Cylinder misfire. One of the cylinder was misfiring. Had to change all 6 ignition coils and spark plugs. 
Mazda Mazda6 in Pennsylvania, United States
May 2013 - Jun 2016
Nov 2013

93000 mi

US $600
Catalytic converter repaired Alternator failed. It took tire plus over seven hours to secure the part and install it. 
Jun 2015

106000 mi

US $200
Alternator was replaced under warranty, but labor was extra. Battery required replacement. 
Sep 2015

106000 mi

US $650
Car was idling rough. The mass air flow tube was cracked. That was repaired and the throttle body and mass air flow sensor were cleaned 
Nov 2015

106000 mi

US $700
Rough idling problem persisted after the first fixes. I searched online for the symptoms of rough idling at low rpms and found that it was likely ignition coils and spark plugs. I requested to have those checked 
Mazda Mazda6 in Ontario, Canada
Feb 2015 - Feb 2016
Mar 2015

131440 mi

C $200
Replace front left wheel bearing 
Mazda Mazda6 in South Carolina, United States
Jul 2007 - Jun 2012
Sep 2011

114000 mi

US $126
Had to replace the spark plugs and #4 coil pack 

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2004 Mazda Mazda6 4dr Hatch

220-horsepower 3.0L V6 5-speed manual FWD

Mazda Mazda6 in British Columbia, Canada
Jan 2016 - Feb 2016
Feb 2016

125860 mi

C $3000
catastrophic engine failure leaking seals from duratec V6 causing valvetrain damage and oil blowby oil level critical to check. seals leak as car ages. 
Mazda Mazda6 in Minnesota, United States
Jul 2007 - Sep 2014
Mar 2011

103000 mi

US $400
Backup lights would not light when car was put in reverse. Dealer replaced switch engaging circuit on transmission. Lights out illuminating switches for climate control. Dealer replaced all bulbs in center stack, as it requires about 90 minutes of labor to get there, but minimal effort and cost to replace more bulbs than just the ones that burned out. 
Jul 2012

129000 mi

US $85
Caliper slide bolts froze on front left brake. The bolts were replaced. 
Feb 2014

158100 mi

US $476
Tensioner for water pump belt seized, destroying the belt. Repair consisted on replacing the belt and tensioner, cleaning the residue from the destroyed belt, and topping off coolant. 
Mazda Mazda6 in California, United States
Feb 2015 - Dec 2017
Nov 2017

107000 mi

US $2300
Replaced rear cat. Replaced valve cover gaskets 

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2004 Mazda Mazda6 4dr Hatch

160-horsepower 2.3L I4 5-speed manual FWD

Mazda Mazda6 in Georgia, United States
Feb 2011 - Mar 2017
May 2011

104300 mi

US $300
computer programming problem 
Aug 2012

122900 mi

US $1300
replaced the clutch 
Sep 2012

122600 mi

US $1300
replaced the clutch and the flywheel. First clutch lasted 100K miles. Second one made it only about 20K miles. Third one better last. 
Aug 2013

131100 mi

US $650
this is the car's third clutch, put in in Sept. 2012. I didn't like how the pedal action felt, and I took it in. Poor install led to problems with control bushing. 

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2004 Mazda Mazda6 4dr Hatch

160-horsepower 2.3L I4 4-speed shiftable automatic FWD

Mazda Mazda6 in South Carolina, United States
Jan 2010 - Oct 2014
Sep 2010

88000 mi

US $250
Headliner is falling down. According to Mazda 6 forums this is a common problem around the 5 year mark. Frustrating problem in a modern car. My 84 Mercury had this issue, but I've never encountered this again until now. Cheap adhesive? 
May 2011

95100 mi

US $358
Replaced two motor mounts. The car would jump noticably when shifted from park in the morning and during the first few gear shifts. Separately, the transmission light came on after a violent storm, but reset after disconnecting battery. 
Aug 2011

97000 mi

US $40
Front right wheel bearing failing; terrible rumbling sound that changes with speed.  Front right wheel bearing failing; terrible rumbling sound that changes with speed. Estimates $300+ to repair. Just paid for diagnosis this trip. 
Oct 2011

100000 mi
Replaced right front wheel bearing Replaced right front wheel bearing Replaced right front wheel bearing 

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2004 Mazda Mazda6 4dr Hatch

Mazda Mazda6 in New York, United States
Oct 2012 - Mar 2018
Feb 2012

60000 mi
car stalled out . engine problem .when I bought it I also purchased the extended warranty . so the engine was covered 
Mar 2018

155000 mi
engine failure 

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2004 Mazda Mazda6 4-door

turbocharged 4-cylinder diesel manual 2WD

Mazda Mazda6 in Romania
Jun 2014 - Dec 2014
Jul 2014

116440 mi

$100
replaced the engine buffer (made of rubber) 
Oct 2014

119740 mi

$100
replaced the exterior mirror from left side (not heating any longer). 
Dec 2014

123380 mi

$300
Replaced all shock absorbers 

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2004 Mazda Mazda6 4-door

6-cylinder automatic 2WD

Mazda Mazda6 in Virginia, United States
Nov 2007 - Mar 2010
Dec 2007

17000 mi
Car is getting horrible gas mileage, less than 10MPG, was brought to dealer to evaluate engine for the fourth time. Problem still not fixed. 

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2004 Mazda Mazda6 4-door

4-cylinder automatic 2WD

Mazda Mazda6 in Massachusetts, United States
Apr 2008 - Mar 2010
Sep 2008

70000 mi
Paint peeling on trunk. 

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See TrueDelta's information for all Sedans, Hatchbacks, and Wagons.
See TrueDelta's information for all Mazda models.

2004 Mazda Mazda6 Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2004 Mazda Mazda6 problems occur, check out our car reliability stats.

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