The 2006 Honda Civic with a 1.8-liter engine produces about 140 horsepower. This article explains the official figures and how they apply across trims and markets.
In more detail, the 1.8-liter inline-four uses Honda’s i-VTEC technology and delivers peak output around 6,300 rpm, with torque peaking near 4,600 rpm. The commonly cited specs for the US-market Civic LX/EX (and most other markets with the 1.8 L engine) are 140 hp and 128 lb-ft of torque. The Civic Si, however, uses a different 2.0-liter engine with higher horsepower.
Engine specifications and power output
The 2006 Civic’s 1.8-liter i-VTEC four-cylinder (often associated with the R18A family in North America) is rated at:
- Horsepower: 140 hp at about 6,300 rpm
- Torque: 128 lb-ft (174 Nm) at about 4,600 rpm
- Displacement: 1.8 L (1799 cc)
- Configuration: Inline-four with i-VTEC variable valve timing
These figures reflect the typical output for the common US-market configurations (LX, EX, and EX-L) and many international versions that used the same powerplant. Variations can occur by trim or region, but 140 hp remains the standard reference for the 1.8 L engine in the 2006 Civic.
Market and trim variations
For context on how horsepower differs by model, note these baseline distinctions:
- 2006 Civic LX/EX/EX-L with 1.8 L i-VTEC: 140 hp
- 2006 Civic Si (different engine): 197 hp
In practice, the 1.8 L engine in most 2006 Civics delivers about 140 hp, while the performance-focused Si line uses a separate 2.0 L powerplant with higher output.
Summary
In summary, the 2006 Honda Civic equipped with the 1.8 L engine produces about 140 horsepower, paired with roughly 128 lb-ft of torque. This pairing is typical for the LX, EX, and EX-L trims in the US and many other markets, while the Civic Si remains a distinct model with a more powerful engine.