2015 Honda Civic Si 2.4L Specs
9th gen · Updated Oct 2026
- Horsepower
- 205 hp
- 174 lb-ft
- Curb weight
- 3,002 lb
- Oil capacity
- 4.4 qt
- with filter
- Oil type
- SAE 0W-20
- Tire size
- 225/40R18
- MPG combined
- 25 mpg
Specs #specs
The 2015 Honda Civic Si 2.4L makes 205 hp at 7,000 rpm and 174 lb-ft of torque at 4,400 rpm. Its curb weight is 3,002 lb.
| Horsepower | 205 hp @ 7,000 rpm |
|---|---|
| Torque | 174 lb-ft @ 4,400 rpm |
| Transmission | 6-speed manual |
| Drivetrain | FWD |
| Curb weight | 3,002 lb |
| Length | 179.4 in |
| Width | 69.0 in |
| Height | 56.5 in |
| Wheelbase | 105.1 in |
Engine #engine
| Engine | 2.4L 4-cylinder (Si) |
|---|---|
| Displacement | 2.4 L |
| Cylinders | I4 |
| Aspiration | Naturally aspirated |
| Fuel | Premium gasoline |
| Compression ratio | 11.0:1 |
| Bore × stroke | 87.0 x 99.0 mm |
Oil capacity & fluids #oil-capacity
The 2015 Honda Civic Si 2.4L takes 4.4 quarts of SAE 0W-20 oil with a filter change.
| Engine oil (with filter) | 4.4 qt |
|---|---|
| Oil type | SAE 0W-20 |
| Manual transmission fluid | 2.0 qt Honda MTF |
| Engine coolant | 1.45 gal |
| Fuel tank | 13.2 gal (premium, 91 octane or higher) |
| Brake fluid | DOT 3 |
Wheels & tires #tire-size
The 2015 Honda Civic Si 2.4L comes with 225/40R18 tires, inflated to 33 psi.
| Tire size | 225/40R18 |
|---|---|
| Wheel size | 18 x 7.5 in |
| Tire pressure | 33 psi |
| Lug nut torque | 80 lb-ft |
Fuel economy #mpg
| City | Highway | Combined | |
|---|---|---|---|
| 6-speed manual | 22 | 31 | 25 |
Maintenance schedule #maintenance
Honda prints no fixed service schedule for this engine. The Maintenance Minder works out engine oil life from how the car is driven and shows codes (A or B plus sub-items 1–7) on the dash when service is due; the owner's manual lists what each code covers.
| Engine oil, if no Maintenance Minder message | 12 mo |
|---|---|
| Brake fluid, if no Maintenance Minder message | 36 mo |
1 recall for the 2015 Honda Civic →
FAQ
How much oil does a 2015 Civic Si take?
The Si's 2.4L takes 4.4 quarts of SAE 0W-20 with a filter change.
How much horsepower does the 2015 Civic Si have?
205 hp at 7,000 rpm and 174 lb-ft at 4,400 rpm, with a 6-speed manual only.
Sources: 2015 Honda Civic Sedan Owner's Manual (1.8L and Si 2.4L), 2015 Civic Sedan Specifications & Features (Honda News), 2015 Civic Si Specifications & Features (Honda News), EPA fueleconomy.gov, NHTSA recalls. Updated Oct 2026.