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Mazda Mazda6 Engine Problems

1025 TrueDelta members own (or used to own) a 2000 or newer Mazda Mazda6. 196 of these members (19.1%) have reported engine repairs for their car. A total of 358 engine repairs to Mazda Mazda6s--an average of 0.3 per vehicle--have been reported.

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 Mazda Mazda6 problems occur, check out our car reliability stats.

Chart based on 978 repairs.

Mazda Mazda6 engine repair cost distribution

Chart based on 240 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten Mazda Mazda6 repair histories. Log in or join us to see them all.

2006 Mazda MazdaSpeed6 4dr Sedan

turbocharged 274hp 2.3L I4 6-speed manual AWD

3000 mi   CEL thrown for a bad Tumble Control Valve. New intake manifold was ordered and replaced. 
11000   very smokey oil, smoke occasionally extreme; replaced turbo 
19000   O2 Sensor malfunction. 
54000 US $10 Exhaust Gas Recirculator (EGR) valve threw a P0401 code. Removed, cleaned, and reinstalled. 
5000   Replaced fuel pump. OEM turbo seals leaking around 4K miles, took 2 trips in June to get it fixed. Visit 1 - replaced fuel pump, 2 days later still smoking. Visit 2 - 14 days in shop, new Hitachi turbo and gaskets. Problem solved. 
26000   TSB for emissions issue. Check engine light came on, which cuts power to the turbo. They said it was running rich, but never stated a reason. I think they just reset it, but the problem never came back, so it was fixed. 

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2005 Mazda Mazda6 4dr Sedan

215-horsepower 3.0L V6 5-speed manual FWD

25420 mi   Check engine light came on. Needed to replace solenoid in engine bank. 

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2004 Mazda Mazda6 4dr Sedan

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

30000 mi   Bad seal on gas cap. Gas cap replaced. Problem solved. 
58700   Intermittent hesitation when accelerating. No CEL 
67000 US $500 Replaced Air Intake hose (containing multiple sensors) Replaced Ignition Coil on cylinder 5. 
69000   Replaced failed engine mount 
74000   Had to replace coils. Multiple oil leaks requiring replacement of three gaskets. 
82000   Bad fan control module 

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2004 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 5-speed manual FWD

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. 

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2004 Mazda Mazda6 4dr Sedan

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

47120 mi   Erratic idle speed, 700 - 2000 rpm. Fixed by software refresh/updates 
71920   Erratic RPMs at idle and low speed driving 
82460   slightly noisy tensioner on serpentine belt. Tensioner and belt replaced under mazda extended warrnty 

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2004 Mazda Mazda6 4-door

6-cylinder automatic 2WD

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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