The 2011 Honda Civic with a 1.8-liter engine delivers 140 horsepower.
In the US market, the 1.8-liter inline-four used across LX, EX, and EX-L trims produces 140 hp and 128 lb-ft of torque. The high-performance Civic Si, which is not the 1.8L version, uses a different 2.0-liter engine with higher output. This article focuses on the 1.8L powerplant and its official figures.
Engine specifications
Before listing the core numbers, here are the essential specs of the 1.8-liter engine as it appeared in the 2011 Civic lineup.
- Engine: 1.8-liter i-VTEC inline-4 (R18A)
- Horsepower: 140 hp at 6,500 rpm
- Torque: 128 lb-ft at 4,600 rpm
- Drivetrain: Front-wheel drive (FWD)
- Transmissions: 5-speed manual or 5-speed automatic, depending on trim
The 1.8L engine is designed for a balance of everyday usability and efficiency, rather than high-performance acceleration. The power is paired with transmission options common to the Civic lineup to suit a range of driving preferences.
Notes on trim variations
The horsepower figure above applies to the non-Si Civics. The Civic Si, a separate performance-oriented variant available in 2011, uses a larger 2.0-liter engine that produces significantly more horsepower. In some markets, there can be minor variations in labeling, but in the United States the 1.8L version is consistently rated at 140 hp.
Context within the Civic lineup
Compared with the Si model's output, the 1.8L Civic offers modest performance focused on efficiency and reliability. This engine has been a staple of the ninth-generation Civic’s non-Si trims, contributing to the car’s reputation for affordable, practical daily driving.
Summary
The 2011 Honda Civic’s 1.8-liter engine produces 140 horsepower at 6,500 rpm and 128 lb-ft of torque at 4,600 rpm, available with either a 5-speed manual or a 5-speed automatic transmission depending on the trim, and paired with front-wheel drive. This specification applies to the LX, EX, and EX-L trims in the US market, while the Si variant offers a different, higher-output engine.