What kind of engine does a 2004 Honda Civic have?
Most 2004 Honda Civic models in the U.S. use a 1.7-liter SOHC inline-four gasoline engine; trims vary by VTEC technology and output, the Si hatchback uses a 2.0-liter DOHC i-VTEC engine, and the natural-gas GX uses a dedicated 1.7-liter CNG engine. Exact specifications depend on trim and market.
Contents
The 2004 Civic’s engine lineup (U.S. models)
Honda offered several distinct powertrains for the 2004 Civic across sedans, coupes, and the Si hatchback. The list below outlines each trim’s engine type, key technologies, and typical output.
- DX, Value Package (VP), LX (sedan/coupe): 1.7-liter SOHC 16-valve inline-4 (D17A1), non-VTEC; approx. 115 hp @ 6100 rpm, 110 lb-ft @ 4500 rpm; aluminum block and head, naturally aspirated.
- EX (sedan/coupe): 1.7-liter SOHC 16-valve inline-4 with VTEC (D17A2); approx. 127 hp @ 6300 rpm, 114 lb-ft @ 4800 rpm; aluminum block and head, naturally aspirated.
- HX (coupe): 1.7-liter SOHC 16-valve inline-4 with VTEC-E/lean-burn tuning (D17A6); approx. 117 hp @ 6100 rpm, 111 lb-ft; engineered for fuel economy.
- GX (sedan, dedicated CNG): 1.7-liter SOHC 16-valve inline-4, natural gas (D17A7); approx. 100 hp @ 6100 rpm, 98 lb-ft @ 3700 rpm; ultra-low emissions.
- Si (hatchback): 2.0-liter DOHC 16-valve i-VTEC inline-4 (K20A3); approx. 160 hp @ 6500 rpm, 132 lb-ft @ 5000 rpm; performance-oriented, naturally aspirated.
All 2004 Civics are four-cylinder, naturally aspirated, front-wheel-drive cars; the differences are in displacement (1.7L vs. 2.0L), cam configuration (SOHC vs. DOHC), and valve timing strategy (VTEC, VTEC-E, or i-VTEC), which shape each trim’s character and efficiency.
Engine technologies in brief
SOHC VTEC and VTEC-E (1.7-liter family)
The 1.7-liter D17 engines use a single overhead cam. In EX models, VTEC switches cam profiles at higher rpm to improve breathing and top-end power. The HX’s VTEC-E emphasizes lean-burn operation and economy, trading some peak output for efficiency. Base trims (DX/VP/LX) run a non-VTEC version for simple, durable daily use.
DOHC i-VTEC (2.0-liter Si)
The Si’s K20A3 adds a dual overhead cam design and i-VTEC control that blends variable cam phasing with lift/timing changes. It delivers a broader powerband and a more performance-focused feel than the 1.7-liter engines.
How to confirm which engine your Civic has
If you’re unsure which engine is in a specific 2004 Civic, these checks can pinpoint the exact variant quickly and reliably.
- Read the under-hood emissions label: It typically lists displacement and often references the engine family (e.g., 1.7L or 2.0L and emissions certification).
- Check the trim badge and build info: EX, HX, GX, and Si designations correspond to distinct engines; the owner’s manual and door-jamb sticker may also list the exact trim.
- Inspect the engine code stamped on the block: D17A1/D17A2/D17A6/D17A7 or K20A3 identifiers are located on the engine block (often on a machined pad near the exhaust manifold or transmission interface).
- Decode the VIN with Honda documentation or a dealer: While the VIN doesn’t spell out the engine code directly, it confirms trim/market, which maps to the engine.
- Review service history: Major repairs or swaps are sometimes documented; older cars may have non-original engines.
Using two or more of these sources helps verify the engine even if the vehicle has been modified or rebadged.
What if the car is not a U.S. model?
Outside the United States, the 2004 Civic was sold with different engine options tailored to regional regulations and preferences. Here are common examples you might encounter in other markets.
- 1.4-liter and 1.6-liter SOHC petrol engines (various D-series variants) in Europe and Asia for mainstream trims.
- 2.0-liter DOHC i-VTEC performance engines (e.g., K20A2) in models like the Civic Type R (EP3) in certain markets.
- 1.7-liter turbo-diesel options in some regions (market-specific availability and output vary).
Because international lineups differ, consult local brochures, registration documents, or the under-hood label to identify the precise engine for non-U.S. cars.
Summary
A 2004 Honda Civic typically has a 1.7-liter SOHC inline-four; base trims are non-VTEC, EX adds VTEC, and the HX uses VTEC-E for economy. The GX runs a dedicated 1.7L natural-gas engine, while the Si hatchback upgrades to a 2.0-liter DOHC i-VTEC. Engine codes commonly include D17A1/A2/A6/A7 for 1.7L variants and K20A3 for the Si. Always verify by checking the trim, under-hood labels, or the engine block stamping.
What year of Civic to stay away from?
Which Honda Civic Years to Avoid
| Model Year | Main Issues |
|---|---|
| 2001 | Transmission failure, airbag recall, engine concerns |
| 2006 | Cracked engine blocks, coolant leaks |
| 2007–2008 | Premature tire wear, engine and body integrity issues |
| 2012 | Poor interior quality, underwhelming ride and build |
How much is a 2004 Honda Civic worth?
2004 Honda Civic Pricing
| Original MSRP | KBB Fair Purchase Price (national avg.) | |
|---|---|---|
| Value Coupe 2D | $13,900 | $2,890 |
| HX Coupe 2D | $14,200 | $3,205 |
| Value Sedan 4D | $14,900 | $4,031 |
| LX Coupe 2D | $15,650 | $3,275 |
Is the Honda Civic 2004 a good car?
This gen of Civic is, quite simply put, the ideal commuter and city car. The engine is reasonably smooth and peppy. Very low road noise with Goodyear Affinity Triple-treads. Steering is nicely weighted for city driving.
What engine is in my 2004 Honda Civic?
Honda’s high-output i-VTEC (“i” for intelligent) 2.0-liter dual-overhead-cam four-cylinder engine produces 160 hp and 130 pounds-feet of torque; it drives a close-ratio five-speed-manual gearbox.
