In 2006, the Honda Civic offered two main powertrains, producing different horsepower levels depending on the model. The standard 1.8-liter engine delivers about 140 horsepower, while the performance-oriented Civic Si uses a 2.0-liter engine rated at around 197 horsepower. Exact figures can vary slightly by market and transmission.
Engine options and horsepower in the 2006 Civic
For most buyers in the United States, the 2006 Civic lineup centered on two engines. The 1.8-liter i-VTEC powerplant powers the majority of trims with 140 horsepower, while the Civic Si runs a larger 2.0-liter i-VTEC engine rated at 197 horsepower. Transmission choices (manual or automatic) do not change the published horsepower for each engine, though they can influence on-road feel and acceleration.
Here are the main engine options and their horsepower figures:
- 1.8-liter i-VTEC engine (DX/LX/EX): 140 horsepower
- 2.0-liter i-VTEC engine (Civic Si): 197 horsepower
Notes: Horsepower figures are manufacturers’ ratings for each engine. Market-specific variations can occur, but the two-number breakdown above reflects the commonly cited figures for the U.S. lineup in 2006.
Performance context
The 140-horsepower 1.8-liter engine provides solid daily-driving performance, while the 197-horsepower Si offers a notably quicker, sportier experience. The Si also includes other performance-focused tweaks beyond horsepower, such as suspension and handling upgrades.
Summary
Among 2006 Honda Civics, horsepower largely clustered around two figures: 140 hp from the standard 1.8-liter engine for most trims, and 197 hp from the 2.0-liter engine in the Civic Si. Market variations exist, but these are the core numbers that define the lineup.