The 2004 Civic EX uses a 1.7-liter inline-4 i-VTEC engine from Honda's D-series, delivering about 127 horsepower.
In North American specifications, the EX’s 1.7-liter engine (D17A family) employs Honda’s variable valve timing system and is paired with either a 5-speed manual or a 4-speed automatic transmission, depending on the drivetrain choice. This setup balanced efficiency with usable everyday performance for the era.
Engine specifications
Here are the key specifications for the US-market EX engine.
- Engine: 1.7-liter inline-4 i-VTEC
- Power output: 127 horsepower at around 6,600 rpm
- Torque: 114 lb-ft at around 4,600 rpm
- Valvetrain: i-VTEC with dual overhead cams
- Transmission options: 5-speed manual or 4-speed automatic
- Engine family: D-series (D17A)
These figures reflect typical North American EX configurations; variations can occur by year or market, especially in emissions tuning and transmission pairing.
Market note
Globally, the 1.7-liter i-VTEC engine used in the 2004 Civic EX was broadly similar, but tuning and equipment could differ by region. The Si variant, for example, used a different 2.0-liter engine and a higher-performing setup.
Summary
The 2004 Honda Civic EX relies on a 1.7-liter inline-4 i-VTEC engine (D17A family), producing about 127 hp and 114 lb-ft of torque, paired with either a five-speed manual or four-speed automatic transmission for a practical blend of efficiency and performance.