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How much horsepower does a 2004 Mustang V6 3.9 have?

In short, the 2004 Ford Mustang V6 delivers about 193 horsepower from its 3.8-liter engine, and there is no 3.9-liter V6 option in that model year.


Engine and power output


The 2004 Mustang V6 is equipped with a 3.8-liter overhead-valve (OHV) V6. Its official power rating is 193 horsepower. The V6 is paired with two transmission choices: a five-speed manual or a four-speed automatic, and the car is rear-wheel drive. These details define the vehicle’s on-road performance and fuel economy for that generation.


The following specifications summarize the core power-related aspects of the 2004 Mustang V6:



  • Displacement: 3.8-liter OHV V6

  • Horsepower: 193 hp

  • Transmission options: 5-speed manual or 4-speed automatic

  • Drivetrain: Rear-wheel drive


In short, the horsepower figure for the 2004 Mustang V6 is 193 hp, reflecting Ford’s 3.8-liter V6 powertrain used in that model year.


Clarifying the 3.9-liter reference


Some sources or discussions may mention a 3.9-liter figure, but there was no 3.9-liter V6 option in the 2004 Mustang. The engine was the 3.8-liter V6, and other Ford models or later generations used different displacements. When shopping for a 2004 Mustang V6, expect the 3.8L engine and its 193-horsepower output.


Summary: The 2004 Mustang V6 produces 193 horsepower from a 3.8-liter V6. There is no 3.9-liter V6 option for that year. For higher power, buyers typically look to the V8 or later engine updates in other model years.

How much horsepower does a 2004 Ford Mustang 3.9 L have?


193 hp
Engine output summary

YearBase Model
2002193 hp (144 kW; 196 PS) at 5,500 rpm 225 lb⋅ft (305 N⋅m) of torque at 2,800 rpm
2003193 hp (144 kW; 196 PS) at 5,500 rpm 225 lb⋅ft (305 N⋅m) of torque at 2,800 rpm
2004193 hp (144 kW; 196 PS) at 5,500 rpm 225 lb⋅ft (305 N⋅m) of torque at 2,800 rpm



How much horsepower does a 2004 V6 Mustang have?


The 2004 Mustang V6 has 190-193 horsepower from its 3.8L or 3.9L engine. The earlier 3.8L V6 engine is rated at 190 horsepower, while the 3.9L version introduced in the later 2004 models produces 193 horsepower. 
You can watch this video to learn more about the 1999-2004 Mustang V6 engine options and specifications: 59sDanny Johnson’s GarageYouTube · Sep 15, 2024

  • 190 hp: This was the standard output for the 3.8L V6 engine, which was in production for most of the 2004 model year. 
  • 193 hp: This was the rating for the 3.9L V6 that replaced the 3.8L in the second half of the 2004 model year. 
  • Torque: Both engines produce 220-225 lb-ft of torque. 



What is the difference between a 3.8 and 3.9 Mustang?


There really is no difference power-wise in the 3.8 and the 3.9. Basically, ford used a few parts from the phased out windstar line on the 04 and it bumped the engine up just enough to be considered a 3.9. It moved the displacement from like 3.83 to 3.85 so they call it a 3.9.



How much horsepower does a 2004 Mustang V6 40th anniversary have?


2004 Mustang Overview:
In celebration of the Mustang's 40th anniversary, Ford gave all of their models a special galloping pony badge. The base model received a new engine in the form of 3.9L Essex V6, but delivered the same 193 horsepower as its slightly smaller predecessor.


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Kevin Bennett

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Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.