The 2015 Honda Civic DX uses a 1.8-liter inline-four engine.
The 2015 Civic DX is part of Honda’s ninth-generation lineup. The base DX trim is powered by Honda’s 1.8-liter i-VTEC engine from the R-series family, a design focused on reliability and efficiency. This article breaks down the engine size, performance figures, and available transmissions for the DX.
Engine size and performance
Key details about the DX's engine size and output are summarized here.
- Displacement: 1.8 liters (1799 cc)
- Configuration: Inline-4 (I4) with i-VTEC
- Engine code: R18A1
- Power: 140 horsepower at 6,500 rpm
- Torque: 128 lb-ft at 4,600 rpm
These specs reflect the base DX engine’s focus on dependable everyday performance and fuel efficiency rather than high horsepower.
Transmission options
Which transmissions were offered for the DX varied by market and configuration, but typically included the following options.
- 5-speed manual transmission
- 5-speed automatic transmission (availability depended on trim and market)
In practice, buyers could select a manual or automatic configuration within the DX lineup depending on the country and model details.
Context and comparison
Across the 2012–2015 Civic generation, the DX/LX trims relied on the 1.8-liter engine, while newer variants later added a turbocharged 1.5-liter engine in some markets. The 1.8L engine remained the standard powerplant for the 2015 DX in North American specifications.
Summary
The 2015 Honda Civic DX uses a 1.8-liter inline-four engine (R18A1) delivering about 140 hp and 128 lb-ft of torque, with transmission options of manual or automatic depending on configuration.