205-Horsepower, 2.4-Liter, 16-Valve DOHC i-VTEC® Engine
Honda’s 2.4-liter, dual-overhead camshaft NP2 engine produces 205 horsepower at 7000 rpm (SAE net) and 174 pound-feet of torque at a low 4400 rpm (SAE net).
6-Speed Manual Transmission
The performance-oriented, close-ratio 6-speed manual transmission is lightweight, compact and has a solid feel. It includes special features such as close ratios for 1st through 5th gears, and a low final drive for faster acceleration. A stiff cast-aluminum transmission case helps reduce noise, while carbon-faced single-cone synchronizers on 5th and 6th gears enhance the shift feel. Finally, a low-ratio 6th gear provides a quieter and more fuel-efficient  mode for highway cruising.
 22 city/31 highway/25 combined mpg rating. Based on 2014 EPA mileage ratings. Use for comparison purposes only. Your mileage will vary depending on how you drive and maintain your vehicle.
Drive-by-Wire Throttle System
Fast-responding electronics take the place of a traditional throttle cable, producing greater response and enhanced driveability with minimum adjustment and maintenance.
Helical Limited-Slip Differential
Usually found only on high-performance and race cars, the limited-slip unit helps give the driver more steering control and enhanced steering response when accelerating and cornering, even when the road surface is less than ideal.
MacPherson Strut Front/Multi-Link Rear Suspension
The Civic Si Sedan’s MacPherson strut and multi-link rear suspension improves feedback and provides a great balance of taut performance and overall ride comfort.
Sequential Rev-Limit Indicator
Every shift counts. The sequential rev-limit indicator displays 6 lights that indicate rising engine rpm. When you find the right rev range, an i-VTEC® light also flashes on, accompanied by more power from the engine.