Across the 2004 Honda Civic lineup, horsepower varies by trim and market. The base DX/LX models use a 1.7-liter engine rated about 115 horsepower, the EX adds i-VTEC for around 127 horsepower, and the performance-oriented Si uses a 2.0-liter engine rated at 160 horsepower. Exact figures can vary with transmission and regional specifications.
Engine options and horsepower by trim
Below is a breakdown of the main US-spec outputs for the 2004 Civic by trim. The numbers reflect common configurations and may differ slightly by year or market depending on emission controls and drivetrain.
- DX/LX: 1.7L four-cylinder (SOHC), approximately 115 hp and about 110 lb-ft of torque.
- EX: 1.7L four-cylinder with i-VTEC, around 127 hp and roughly 114 lb-ft of torque.
- Si: 2.0L four-cylinder (DOHC) with i-VTEC, about 160 hp and around 141 lb-ft of torque.
These figures reflect typical US-spec Civics of that era; actual horsepower can vary slightly by production year, transmission type (manual vs. automatic), and regional market.
Notes on variation and market differences
Horsepower is one part of the picture. Weight, gearing, and torque curves also influence real-world acceleration. In non-US markets, or for special editions, horsepower numbers may differ due to different emissions equipment or measurement standards. Always check the vehicle’s badge or the original manufacturer documentation for the exact figure on a specific car.
Summary
The 2004 Civic’s horsepower ranges from about 115 hp in the base DX/LX to 127 hp in the EX, and up to 160 hp in the Si. These values are typical for US-spec models, with minor variations possible due to year, transmission, and market.