2004 Mazda RX-8 Mazda RX-8 2004

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2004 Mazda RX-8 repairs by problem area

Engine (58%)

Transmission and Drivetrain (11%)

Brakes and Traction Control (0%)

Suspension and Steering (7%)

Electrical and Air Conditioning (15%)

Paint, Rust, Leaks, Rattles, and Trim (7%)

Other (2%)

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Chart based on 220 repairs.
See TSBs and recalls for the 2004 Mazda RX-8.

2004 Mazda RX-8 electrical repair cost distribution

$2500+ (0%)

$1000 - $2499 (9%)

$500 - $999 (12%)

$100 - $499 (29%)

< $100 (50%)

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Chart based on 34 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2004 Mazda RX-8

Engine not specified

48000 mi

US $400
200 miles after the motor was replaced (and 1000 after the transmission and torque converter was replaced), the starter went out leaving me stranded in a snow storm 

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2004 Mazda RX-8 4dr Coupe

238-horsepower 1.3L R2 6-speed manual RWD

22320 mi

C $35
Replaced the front headlight level sensor with a second-hand known-good unit. Work done by myself. 
66420 mi Headlight washer solenoid or motor draws current with the car off, draining the battery. System still functional otherwise. Repair was put off to future; headlight washer system disabled by removing its fuse. 
98000 mi

US $75
RFID system forgot keys when cooling fan failed to shut off after turning off car. It's done this twice before. Highly obnoxious. When it happens the car must be towed to the dealer and reprogrammed for the keys. 
98000 mi They suggested the RFID problem *could* be the ecu or a few other components. They didn't know. Final cost to replace all the parts it could be was around 5k so I decided to just sell it. 
63000 mi

US $1023
Alternator belt separated cutting wires shorted out coil pack, blew engine fuse setting code in security system disabling ignition requiring a tow. Also starter was going out so had that replaced at the same time as electrical repair. 
83000 mi

US $400
Had to replace driver's side electric door locking assembly. 
89000 mi

US $500
The Red LCD for the radio and heater description died. Damn. Everything worked but there were no eyes. Heater or radio. Cost $270 + labor. 
53000 mi Replace main dash control panel and controls. 
70000 mi

US $350
Replace heater control unit. 
189 mi Completed Mazda recalls (1604B) Side Air Bag and (1704B) Dynamic Damper Bracket. 
22307 mi Dealer Tech Service Bulletin. Replaced Starter, Plugs, Battery, and Reflashed. N/C 
50000 mi

US $220
Replaced HVAC control module. The temperature dial would not allow hot air when selected. This was a common problem when I researched it on Rx8club.com. 
120280 mi

C $400
Hot/cold air working intermittently 
33156 mi Replace factory stereo head unit. 
42000 mi

US $150
Small fire in alternator associated wiring, shop says alternator and associated wiring needed repair, fifty dollar deductible and paid for express shipping for parts, one hundred dollars. 
56000 mi Airbag light on intermittently, diagnosed per shop car needs new Airbag electrical harness. Update: later cleared up on its own. 
72000 mi

US $1150
Battery died, unable to jump, towed to dealer, batt. changed. 
55000 mi HVAC temparature control circuit board needed repair (resoldering on one pin). 
55000 mi

US $500
Burned out headlight (high beam) 
41000 mi

US $600
Alternator defective 
44500 mi

US $75
defective check engine warning prevents cruise control operation 
83000 mi

US $770
Replaced the cabin temperature control module & shift lever boot. 
89700 mi

US $65
Battery replaced 
57750 mi

US $412
Car was failing to start; diagnosed incorrectly as a bad battery; turned out to be a faulty starter 
72000 mi

US $230
HVAC/Radio display was cycling gibberish. Repair was to install a new CD player/ radio. This is the single disc unit.  
24800 mi

$200
Changed starter motor. 
27380 mi

$75
Reflash after jump start created problems. 
31000 mi CD changer jammed 

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2004 Mazda RX-8 4dr Coupe

197-horsepower 1.3L R2 4-speed shiftable automatic RWD

79000 mi

US $90
Drivers side HID headlamp burned out. It was not the bulb but the ballast. Mazda does not have a part number so dealer wanted $1500 to replace entire assembly. Had an automotive electrician do the job for $90.00 
23000 mi

US $1279
Starter replaced 

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2004 Mazda RX-8 4-door

4-cylinder manual 2WD

29000 mi

US $298
The power lumbar support had a broken switch. Dealer noticed it during an inspection and took care of it under warranty. 

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2004 Mazda RX-8 4-door

2-cylinder manual 2WD

22940 mi The heat in the cabi would fluctuate from hot to cold (like the air conditioner had come on). Twisting the heat control knob from current setting of hot to cold and back again (repeat as necessary) would usually bring the heat back to the cabin.  Replaced heater, details in email 050207 

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2004 Mazda RX-8 Electrical Problems

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 RX-8 problems occur, check out our car reliability stats.