2004 Mazda MX-5 Miata Mazda MX-5 Miata 2004

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2004 Mazda MX-5 Miata repairs by problem area

Engine (53%)

Transmission and Drivetrain (6%)

Brakes and Traction Control (6%)

Suspension and Steering (9%)

Electrical and Air Conditioning (22%)

Paint, Rust, Leaks, Rattles, and Trim (0%)

Other (3%)

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Chart based on 32 repairs.
See TSBs and recalls for the 2004 Mazda MX-5 Miata.

2004 Mazda MX-5 Miata engine repair cost distribution

$2500+ (0%)

$1000 - $2499 (12%)

$500 - $999 (35%)

$100 - $499 (24%)

< $100 (29%)

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Chart based on 17 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2004 Mazda MX-5 Miata

Engine not specified

70000 mi New exhaust required 

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2004 Mazda MX-5 Miata 2dr Convertible

turbocharged 178hp 1.8L I4 6-speed manual RWD

97200 mi

US $25
Thermostat failed open, symptoms include very slow warm up and poor temperature regulation. 
115000 mi

US $120
Replace O2 sensor 
115000 mi VTCS solenoid died. Simple replacement. 
63000 mi

US $600
Oil leak - oil pan gaskets needed to be replaced. The engine mounts were replaced at the same time. 
60000 mi

US $400
Radiator replaced at the suggestion of mechanic. Tanks discolored, was told it could fail soon after 10 years of service. 
108000 mi

US $600
fuel pump-replaced. 
111300 mi Crank angle sensor. 
76880 mi

A $500
Car loses power on hot days and has to pull over. Believed to be petrol pump which repaired but problem remains. Car has to be put in again at mechanic. 
99000 mi

US $400
Oil pan gasket leaking and new engine mounts required. 

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2004 Mazda MX-5 Miata 2dr Convertible

142-horsepower 1.8L I4 6-speed manual RWD

87000 mi Engine leaks oil, likely from rear main seal. Definitely not from the valve cover gasket. 
92000 mi

US $500
Radiator cracked. Replaced radiator. 

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2004 Mazda MX-5 Miata 2dr Convertible

142-horsepower 1.8L I4 5-speed manual RWD

120000 mi

US $736
Two ignition coil packs 
112000 mi

US $1000
Camshaft sensor was throwing an ODB2 error code and needed to be replaced. 
122000 mi

US $300
Crankshaft sensor replaced because loss of signal was causing engine misfire. 
122000 mi

US $1500
Full tune up: valve cover gasket, valve clearances, timing adjustments. I was having a small oil leak from the valve gasket cover. I was also experiencing harsh misfiring at full or even partial throttle which was fixed via the tune up. 

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2004 Mazda MX-5 Miata 2dr Convertible

142-horsepower 1.8L I4 4-speed automatic RWD

45000 mi

US $900
Car just coughs and dies No repair, paid cost looking for problem. Took to local garage found cause to be Gas. Too much alcohol in gas. Only now go to certain stations without alcohol. 

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See TrueDelta's information for all Mazda models.

2004 Mazda MX-5 Miata Engine 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 MX-5 Miata problems occur, check out our car reliability stats.