The Civic Si uses a 6-speed manual transmission. There is no automatic option in the current US-market Si lineup.
Honda’s sport-focused variant sticks to a driver-involved setup: a turbocharged engine paired exclusively with a manual gearbox, underscored by a performance-oriented chassis and torque management. This continuation emphasizes engagement over convenience for enthusiasts who choose the Si over other Civic trims.
Transmission details
Below are the defining characteristics of the Civic Si’s gearbox in the current generation.
- 6-speed manual transmission (6MT) with a short-throw shifter for quicker, more precise shifts
- Helical-type limited-slip differential standard to improve traction during corner exits
- Tuned gear ratios and final drive to complement the turbocharged 1.5-liter engine
- Exclusively manual in the Civic Si lineup, with no automatic or CVT option
In short, the Civic Si’s transmission is engineered for immediate engagement and confident handling, reinforcing the model’s role as Honda’s enthusiast-oriented variant.
Generation notes
Across the current generation, Honda has maintained manual-only availability for the Si in the United States, continuing the model’s tradition of prioritizing driver involvement over automatic convenience. While other Civic trims offer automatic transmissions, the Si remains a pure manual experience designed to appeal to enthusiasts.
Summary
Bottom line: The Civic Si is equipped with a 6-speed manual transmission, featuring a short-throw shifter and a helically driven limited-slip differential, with no automatic option in the current lineup. This configuration underscores Honda’s emphasis on engagement and performance in the Si variant.