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Ford Mustang Engine Problems

1129 TrueDelta members own (or used to own) a 2000 or newer Ford Mustang. 115 of these members (10.2%) have reported engine repairs for their car. A total of 166 engine repairs to Ford Mustangs--an average of 0.1 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 Ford Mustang problems occur, check out our car reliability stats.

Chart based on 842 repairs.

Ford Mustang engine repair cost distribution

Chart based on 104 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 Ford Mustang repair histories. Log in or join us to see them all.

2007 Ford Mustang 2dr Coupe

300-horsepower 4.6L V8 5-speed automatic RWD

3800 mi   New coil and spark plug. Repaired under warranty. 

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2007 Ford Mustang 2dr Convertible

300-horsepower 4.6L V8 5-speed manual RWD

7440 mi   Replacement of serpentine belt pulley with bad bearing Serpentine belt idler pulley replaced 
13020   Engine makes a ticking noise, at all temperatures, loudest at 1200 RPM. Engine knock occurring during light-load upshifts at 3000-4000RPM, also intermittently under load at 5000RPM and above. Left front O2 sensor was found to have a slow response and was replaced under warranty. Second, more detailed examination of engine ticking noise at 1200RPM. Noise found to be loudest at intake runner for cyl. #4. Other likely sources eliminated. (Bellhousing, injectors, cam covers, etc.) Was told noise is "normal". 

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2006 Ford Mustang 2dr Coupe

300-horsepower 4.6L V8 5-speed manual RWD

11000 mi   Fuel pump assembly replaced under warranty per TSB. Hesitation during acceleration after long drive. 
27000 US $12 VCT Sensor Grommet/Seal failed allowing small oil leak from the driver-side valve cover. Replaced grommet myself for $12. 
27000   Fuel pump failed and was replaced. 
16000   Hesitation after long trip on the highway. 

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2005 Ford Mustang 2dr Coupe

300-horsepower 4.6L V8 5-speed manual RWD

11780 mi   Car would not idle smoothly anymore. 
9000   Throttle cut out when accelerating - intermittent. Fuel pumps replaced. 

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2005 Ford Mustang 2dr Coupe

300-horsepower 4.6L V8 5-speed automatic RWD

20000 mi   Fuel pump and fuel level sensor replaced under warranty. 

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2005 Ford Mustang 2dr Coupe

210-horsepower 4.0L V6 5-speed automatic RWD

28000 mi US $50 Fuel tank replaced to correct complaint that gas pump shuts off repeatedly while fueling even at very slow pace. 
49000   Car would lurch and make noise with loss of power for a brief moment and would then regain and be fine. Never stalled and had no loss of control. Problem was determined to be throttle sensor being dirty. Removed & cleaned throttle body & re-pgm. 
58000   Thermostat housing leak. Coolant had been leaking all over and was low. Replaced seal and housing parts. Drained coolant and replaced coolant (after a flush-maint item).  
88700   Cracked Serpentine belt. 
90000   Replaced serpentine belt. Replaced radiator reserve cap. Car was running hot while idling. (Maint. work also elected: Decided to do coolant flush which was previously recommended and would help maintain cooler vehicle). 

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2005 Ford Mustang 2dr Convertible

210-horsepower 4.0L V6 5-speed automatic RWD

31000 mi   Throttle position Sensor failure. TPS replaced. 

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