The Civic Si is powered by a turbocharged 1.5-liter inline-four engine that delivers roughly 200 horsepower and 192 lb-ft of torque, paired exclusively with a six-speed manual transmission.
In the current generation, Honda’s Si trim uses the Earth Dreams Technology 1.5L turbo engine, tuned for sportier response and a more engaging driving experience. It features direct injection, i-VTEC variable valve timing, and a compact turbocharger to balance everyday usability with performance potential.
Engine technology and configuration
Below are the core technical aspects that define the Civic Si’s powerplant.
- Displacement: 1.5 liters
- Configuration: Inline-4 cylinder
- Forced induction: Turbocharged with intercooling
- Fuel delivery: Direct injection
- Valvetrain: i-VTEC with variable valve timing
- Power output: generally around 200 horsepower (varies slightly by model year)
- Torque: about 192 lb-ft
- Transmission: Six-speed manual only (no automatic option in Si)
These characteristics give the Civic Si its characteristic balance of accessible daily drivability and responsive, sport-oriented performance.
Year-to-year variations and notable updates
Engine output and calibration have seen minor tweaks across model years, but the fundamental setup remains the same: a 1.5L turbocharged inline-four tuned for the Si with a manual transmission. Power has fluctuated slightly in official ratings (roughly in the 200–205 hp range) while torque stays around the 192 lb-ft mark. The Si continues to emphasize driver involvement, with chassis tuning and gearing designed to maximize road feel and response.
These adjustments reflect Honda’s ongoing efforts to maintain the Si’s character amid evolving emissions standards and efficiency targets, while preserving its appeal as a dedicated performance hatchback.
Summary
The Honda Civic Si relies on a turbocharged 1.5-liter inline-four from Honda’s Earth Dreams lineup, producing about 200 hp and 192 lb-ft of torque. It is paired exclusively with a six-speed manual transmission, underscoring the Si’s focus on engaging, driver-centered performance within the Civic family.