| Model year | 2009 |
| Make | Honda |
| Model | Civic |
| Style | Si 4dr Sedan With Nav, High-Performance Tires (2.0L 4cyl 6M) |
| Base MSRP | $25,015 |
| Options on test vehicle | None. |
| As-tested MSRP | $25,015 |
| Drive type | Front-wheel drive |
| Engine type | Inline-4 |
| Displacement (cc/cu-in) | 1,998cc (122 cu-in) |
| Block/head material | Aluminum/aluminum |
| Valvetrain | Double overhead camshaft |
| Compression ratio (x:1) | 11.0 |
| Redline (rpm) | 8,000 |
| Horsepower (hp @ rpm) | 197 @ 7,800 |
| Torque (lb-ft @ rpm) | 139 @ 6,100 |
| Transmission type | Six-speed manual |
| Transmission and axle ratios (x:1) | I=3.267; II=2.130; III=1.517; IV=1.147; V=0.921; VI=0.659; R=3.583; Final=4.76 |
| Suspension, front | MacPherson strut |
| Suspension, rear | Multilink |
| Steering type | Electric power steering |
| Steering ratio (x:1) | 13.62 |
| Tire brand | Michelin |
| Tire model | Pilot Exalto PE2 |
| Tire type | Performance |
| Tire size, front | P215/45R17 W |
| Tire size, rear | P215/45R17 W |
| Wheel size | 17-by-7 inches front and rear |
| Wheel material | Alloy |
| Brakes, front | Ventilated disc |
| Brakes, rear | Disc |
| 0-45 mph (sec.) | 4.8 |
| 0-60 mph (sec.) | 7.0 |
| 0-75 mph (sec.) | 10.1 |
| 1/4-mile (sec. @ mph) | 15.3@ 93.0 |
| 0-60 with 1 foot of rollout (sec.) | 6.7 |
| Braking, 30-0 mph (ft.) | 32 |
| 60-0 mph (ft.) | 123 |
| Slalom, 6 x 100 ft. (mph) | SC Off: 68.8/SC On: 64.9 |
| Skid pad, 200-ft. diameter (lateral g) | SC Off: 0.89/SC On: 0.87 |
| Sound level @ idle (dB) | 45.1 |
| @ Full throttle (dB) | 85.0 |
| @ 70 mph cruise (dB) | 69.4 |
| Acceleration comments | As per usual, getting the right launch means finding the optimal spin-to-bog tipping point. Very noticeable VTEC cam phasing. Shifter is brilliant, quick and well defined. Too bad about the 2nd-gear ratio hitting the rev limiter just shy of 60 mph and necessitating a shift to 3rd. Love the sound of this engine! |
| Braking rating | Good |
| Braking comments | Ultra-consistent distances and fade-free stops, though we did smell brakes after both decel and accel runs. Adequate pedal feel and easy to modulate in everyday driving, too. |
| Handling rating | Excellent |
| Handling comments | Stability control merely closes throttle (no brake application), but it still grips rather well. With stability off, the Si responds only slightly to throttle input/output. Holds a line very well with mild understeer. Overall, very good balance. Steering feels spring-loaded, offers some feel but not much. In the slalom, stability is pretty crude and abrupt with brake application. Shutting it off releases the chassis' full potential, which is astonishly good. Lightning reflexes from steering and weight transfer is immediate. This car does exactly what it is told to do. Very little roll and limited-slip differential makes the exit easy-peasy at wide-open throttle. |
| Elevation (ft.) | 1,121 |
| Temperature (°F) | 63.19 |
| Wind (mph, direction) | 3.4 Head |
| EPA fuel economy (mpg) | 21 city/29 highway/24 combined |
| Edmunds observed (mpg) | N/A |
| Fuel tank capacity (U.S. gal.) | 13.2 |
| Curb weight, mfr. claim (lbs.) | 2,954 |
| Curb weight, as tested (lbs.) | 2,932 |
| Weight distribution, as tested, f/r (%) | 60.7/39.3 |
| Length (in.) | 177.3 |
| Width (in.) | 69.0 |
| Height (in.) | 56.5 |
| Wheelbase (in.) | 106.3 |
| Track, front (in.) | 59.0 |
| Track, rear (in.) | 60.2 |
| Turning circle (ft.) | 35.4 |
| Legroom, front (in.) | 42.2 |
| Legroom, rear (in.) | 34.6 |
| Headroom, front (in.) | 38.1 |
| Headroom, rear (in.) | 36.7 |
| Shoulder room, front (in.) | 53.6 |
| Shoulder room, rear (in.) | 52.3 |
| Seating capacity | 5 |
| Cargo volume (cu-ft) | 12.0 |
| Bumper-to-bumper | 3 years/36,000 miles |
| Powertrain | 5 years/60,000 miles |
| Corrosion | 5 years/Unlimited miles |
| Free scheduled maintenance | Not available |
| Front airbags | Standard |
| Side airbags | Standard dual front |
| Head airbags | Standard front and rear |
| Knee airbags | Not available |
| Antilock brakes | 4-wheel ABS |
| Electronic brake enhancements | Braking assist, electronic brakeforce distribution |
| Traction control | Standard |
| Stability control | Standard |
| Tire-pressure monitoring system | Tire-pressure monitoring |
| Emergency assistance system | Not available |
| NHTSA crash test, driver | 5 stars |
| NHTSA crash test, passenger | 5 stars |
| NHTSA crash test, side front | 4 stars |
| NHTSA crash test, side rear | 5 stars |
| NHTSA rollover resistance | 4 stars |
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