In brief, the 2004 Honda Civic offered three transmission configurations depending on the trim: a 4-speed automatic, a 5-speed manual on most non-Si models, and a 6-speed manual on the Civic Si.
Overview of 2004 Civic transmissions
The seventh-generation Civic, sold in 2004, came with two main avenues for shifting gears: conventional automatics and manuals. Availability varied by model and market, but the following options were common in the United States.
Transmission options across the lineup included the following configurations:
- 4-speed automatic transmission (4AT) – the standard auto option on many non-Si Civics, paired with the 1.7L engine.
- 5-speed manual transmission (5MT) – offered on most non-Si trims, providing a traditional Honda manual experience with better fuel economy and driver engagement.
- 6-speed manual transmission (6MT) – exclusive to the Civic Si, the performance variant, which used a close-ratio, tuned six-speed gearbox.
Note: Availability depended on the model year and market. The Si was only sold with a manual transmission; no automatic option was offered for that trim in 2004.
Further details and tips
To determine which transmission your specific 2004 Civic has, you can check the owner's manual, the VIN/build sheet, or look at the gear selector: a clutch pedal and a manual shifter indicate a manual transmission, while an automatic shifter with PRNDL indicates an automatic transmission. For the Si, you will definitively find a 6-speed manual shifter.
Identification by visuals
A manual transmission car will show a clutch pedal to the far left; automatic cars have only two pedals (brake and accelerator). The gear lever on a 5-speed manual will typically show an H-pattern with five forward gears, while the 6-speed manual will have a shorter throw and a similar pattern with six forward gears.
Summary
The 2004 Honda Civic offered multiple transmissions depending on trim: a 4-speed automatic on many models, a 5-speed manual on most non-Si variants, and a 6-speed manual exclusively for the Civic Si. Always verify your specific vehicle's transmission via the VIN, owner's manual, or build sheet to be sure.