The 2004 Subaru WRX STI represents the pinnacle of the second-generation Impreza WRX platform, combining rally-bred engineering with accessible performance. This specific model year stands out for its refined power delivery and track-focused enhancements that distinguish it from the standard WRX. Understanding the 2004 WRX STI specs is essential for enthusiasts seeking a used performance car that offers a balance of capability and usability. The vehicle’s construction and mechanical layout create a driving experience that remains engaging in the modern era.
Engine and Performance Specifications
At the heart of the 2004 WRX STI lies the horizontally-opposed, turbocharged 2.5-liter EJ257 engine. This unit generates 300 horsepower at 6,000 rpm and 290 lb-ft of torque between 4,000 and 4,400 rpm, providing a broad and usable power band. The inclusion of an air-to-air intercooler ensures consistent performance by managing intake air temperatures under load. This powertrain mated to a robust 6-speed manual transmission, delivering power to all four wheels through the symmetrical AWD system. The result is a 0 to 60 mph time in the low 5-second range and a top speed exceeding 155 mph, making it one of the quickest production sedans of its time.
Drivetrain and Chassis Engineering
The symmetrical all-wheel-drive system is fundamental to the STI’s dynamics, distributing power between the front and rear wheels for superior traction and stability. The chassis features a reinforced monocoque with increased rigidity, crucial for handling the engine’s power and responding to driver inputs. Active torque vectoring through the center differential enhances cornering performance by actively managing power delivery between the front and rear axles. This system reduces understeer and allows for aggressive cornering with confidence, translating the driver’s intentions directly to the road.
Exterior and Dimensions
Visually, the 2004 WRX STI is distinguished by its wider body kit, redesigned front bumper with integrated fog lights, and a prominent rear spoiler. The standard 17-inch alloy wheels shod with high-performance tires provide a low profile and responsive grip, signaling its athletic intent. The overall length measures approximately 176 inches, with a wheelbase of 100.4 inches, contributing to a balanced and planted feel at speed. These dimensional choices were not arbitrary but were calculated to optimize handling dynamics and visual presence.
Interior Comfort and Technology
Inside, the STI moves beyond pure function to offer a driver-centric environment with sport seats, a leather-wrapped steering wheel, and aluminum pedals. The gauge cluster is dominated by large, easy-to-read analog dials, while a tachometer highlights the engine’s eager rev range. Modern convenience features such as power windows, remote keyless entry, and a premium audio system ensure the car is livable for daily driving. The cabin is a blend of supportive ergonomics and quality materials, reducing the compromises often associated with performance vehicles.
