On 13 December 2010, Honda unveiled a sketch of the new ninth-generation Civic which was described as energetic, sleek and aerodynamic.
Both coupe and sedan concepts were shown on 10 January 2011 at the 2011 North American International Auto Show. The production version of the ninth-generation Civic (previewed by the concept) went on sale in the U.S. on 20 April 2011. In late 2012, Honda updated its Civic model with new exterior and interior trims for the 2013 year.

The Honda Civic Si is a sport compact trim of Civic by Honda. The Si (Sport Injected) trim was introduced for the third generation of Honda Civics in both Japan and North America.
In Canada and elsewhere the trim became known as the SiR for the sixth and seventh generations, and the Si trim was equivalent to the USDM EX model.

The 9th generation Civic Si is available as a Coupe and as a Sedan. Honda uses a new 2.4L K-Series (K24Z7) which has increased displacement through longer piston stroke than the K20Z3 from the 8th generation Civic Si, yet the K24Z7 retains the 11.0:1 compression used in the K20Z3. The K24Z7 produces 201 hp and 170 lb·ft (230...