The 2010 Civic Si uses a 2.0-liter inline-4 known as the K20Z3, producing about 197 horsepower and 139 lb-ft of torque, paired with a six-speed manual transmission.
The Si variant of the ninth-generation Civic focuses on high-revving performance and precise handling. Below is a detailed look at the engine and how it shapes the car’s driving character.
Engine at a glance
Key technical specifications for the Civic Si’s engine are listed below.
- Engine code: K20Z3
- Displacement: 2.0 liters
- Configuration: Inline-4 with i-VTEC (DOHC)
- Induction: Naturally aspirated
- Maximum horsepower: 197 hp @ 7,000 rpm
- Peak torque: 139 lb-ft @ 6,500 rpm
- Fuel system: Multi-point fuel injection
- Compression ratio: approx. 11.0:1
- Transmission: 6-speed manual (front-wheel drive)
In essence, this engine is a high-revving, performance-oriented powerplant designed to deliver strong acceleration and responsive throttle across the upper rev range, matching the Civic Si’s sporty character.
Performance context
With the 2.0-liter K-series engine and a close-ratio manual transmission, the Civic Si offers brisk acceleration, especially in the mid-to-high rev range, supported by Honda’s sport-tuned chassis and gearing for a driver-focused experience.
Summary
For 2010, the Honda Civic Si pairs a 2.0-liter inline-4 (K20Z3) with i-VTEC, producing about 197 horsepower and 139 lb-ft of torque, exclusively via a 6-speed manual transmission to emphasize performance driving.