The 2004 Honda Civic Si has 160 horsepower.
In North America, this model year used Honda's 2.0-liter i-VTEC engine tuned for higher-rev performance, delivering 160 hp and 132 lb-ft of torque. The following details break down the engine’s power delivery and how it fits into the Civic Si lineup for that year.
Engine and power details
The US-spec 2004 Civic Si is equipped with the 2.0-liter i-VTEC K20A3 engine. It produces 160 horsepower at higher RPMs and 132 lb-ft of torque, with VTEC engagement at elevated engine speeds to maximize power in the upper rev range. The car comes standard with a 5-speed manual transmission and front-wheel drive.
Key technical figures for the 2004 Civic Si (US-spec):
- Engine: 2.0L i-VTEC K20A3
- Horsepower: 160 hp @ 6,800 rpm
- Torque: 132 lb-ft @ 4,600 rpm
- Transmission: 5-speed manual
- Drivetrain: Front-wheel drive
Note: These specifications refer primarily to the US-market model. Other regions had variations, but the 160 hp figure is the widely cited standard for the 2004 US Civic Si.
Market context
US vs other markets
While the United States received the 2.0-liter i-VTEC K20A3-powered Civic Si with 160 hp, some overseas variants and other Civic Si configurations used different engines or tunings. The 160-horsepower figure remains the commonly cited specification for the 2004 US-spec Si.
Summary
The 2004 Honda Civic Si delivers 160 horsepower from a 2.0-liter i-VTEC engine (K20A3), paired with a 5-speed manual and front-wheel drive. This setup exemplified Honda’s emphasis on high-rev, engaging performance in a compact, sporty package for that model year.
Additional context
For enthusiasts, this generation is often remembered for its rev-happy nature and the balance between light weight and responsive steering, qualities that complemented the stated 160 hp in the 2004 Si.