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Mechanical Traits

The 2025 Honda Civic Si comes in a single trim level with a straightforward powertrain pairing a turbocharged 1.5-liter four-cylinder engine (200 hp and 192 lb.-ft. of torque) with a six-speed manual gearbox with rev-matching. Drivers will appreciate the enhanced road feel of this special model, made possible by its drive mode selector (settings: Normal, Sport, and Individual), refreshed sport-tuned suspension, and limited-slip differential. Despite its significant fun factor, the front-wheel-drive Civic Si remains efficient, with the EPA estimating a return of 27 mpg around town and 37 mpg on the highway.

Standard Features and Available Accessories

Honda has thoughtfully equipped the 2025 Civic Si with a pleasing blend of comfort features and performance attributes. As mentioned, heated front sport seats are now included, as are automatic climate control (one zone), proximity keyless entry, automatic on/off LED headlights, LED taillights and daytime running lights, a leather-wrapped steering wheel and shift knob, push-button ignition, two front USB-C data ports, and a 60/40-split rear seatback with a center armrest. The model shows off obvious style with a moonroof, a gloss-black decklid spoiler, gloss-black side mirrors (heated), a pair of chrome exhaust finishers, red interior accents, sport pedals, a 10.2-inch digital driver interface, and stylish 18-inch matte-black alloy wheels. Honda makes a number of aesthetics-related accessories available, with spoilers, gloss-black badging, and illuminated door sills. Plus, as we noted above, buyers can opt for warm-weather performance tires as a factory upgrade.

Driver-Assist Technology

Although it’s billed as a performance-forward variant, the Civic Si still gets a good number of standard safety features via the Honda Sensing driver-assist bundle. This technology suite consists of automatic high beams, adaptive cruise control with low-speed follow, forward collision warning, collision mitigation braking, road departure mitigation, lane keeping assist, lane departure warning, and a blind-spot monitor with rear cross-traffic alert. The requisite rearview monitor is a deluxe version that presents views from multiple angles, with helpful dynamic guidelines for more confident backing and parking.

Entertainment and Connectivity 

One of the noteworthy improvements for model year 2025 concerns the Civic Si’s infotainment system, which is now Google-based and housed within a 9-inch touchscreen. It features Google built-in (Google Maps, Google Assistant, and Google Play Store) plus wireless smartphone integration (Android Auto and Apple CarPlay) HD Radio, a Wi-Fi hotspot, SiriusXM satellite radio, and Bluetooth technology for hands-free phone and audio streaming. The sound quality is excellent, thanks to the standard Bose audio system with 12 speakers.

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