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General
Make :
Subaru
Base price :
$32,195
Model :
2006 Impreza WRX STi
Production :
N/A
Powertain layout :
Front / RWD
Origin
Japan
Dimensions
Wheelbase :
2540 mm / 100 in
Width :
1740 mm / 68.5 in
Length :
N/A
Weight :
1520 kg / 3351 lbs
Height :
N/A
Front Track :
1491 mm / 58.7 in
Ground clearance :
N/A
Rear Track :
1496 mm / 58.9 in
Engine
Configuration :
Boxer-4
Bore :
99.5 mm / 3.92 in
Valvetrain :
DOHC, 4 Valves per Cyl w/VVT
Stroke :
79 mm / 3.11 in
Displacement :
2457 cc / 149.9 cu in
Compression Ratio :
8.2:1
Power :
223.7 kw / 300 bhp @ 6000 rpm
BHP / Liter :
122.1 bhp per litre
Torque :
406.75 nm / 300 ft lbs @ 4000 rpm
Redline :
N/A
Transmission
Gear type :
6-Speed Manual
5th gear ratio :
0.971:1
1st gear ratio :
3.636:1
6th gear ratio :
0.756:1
2nd gear ratio :
2.375:1
7th gear ratio :
-
3rd gear ratio :
1.761:1
Reverse ratio :
N/A
4th gear ratio :
1.346:1
Final drive ratio :
155:1
Chassis & body
Body / Frame :
Unit Steel
Brake types :
Discs w/ABS, EBD
Steering :
Quick Ratio Rack & Pinion
Front brake size :
323 mm / 12.7 in
Front tires :
225/45ZR17 Bridgestone Potenza RE070
Rear brake size :
312 mm / 12.3 in
Rear tires :
225/45ZR17 Bridgestone Potenza RE070
Performance
Top speed :
N/A
60-0 braking :
N/A
0-60 mph :
5.1 seconds
Lateral Acceleration :
N/A
0-100 mph :
13.8 seconds
EPA city / Hwy :
20 mpg
0-¼ mile :
13.5 seconds
Article:
The new Impreza shows a drastically different design approach, one which is probably motivated by Subaru's new designer, Andreas Zapatinas of ex-Alfa Romeo fame. One particular area of interest is the front end. It features a controversial three part grill, a design we first saw from Subaru on their 2003 Subaru B11S Concept. Whether or not the new face and hood-top character lines gel with the rest of the car remains for the viewer to decide. In either case, Subaru have really upped the ante against the very evolutionary Mitsubishi Lancer IX.
The 300-horsepower Impreza WRX STI gains a further edge in all-wheel drive performance for 2006. The power distribution ratio in its advanced Driver Controlled Center Differential (DCCD) version of Symmetrical All-Wheel Drive has been changed from 35:65 to 41:59 and uses a new mechanical limited slip center differential in place of the previous hydraulically controlled unit. The addition of a steering sensor to the differential’s control inputs further enhances torque transfer and overall performance of the AWD system.
The WRX STI accents the Impreza re-style with new design features of its own. A new roof vane spoiler, as used on the Impreza WRC rally car, contributes to stability at track speeds. The new rear underbody diffuser and new side sill spoiler design ensure the WRX STI will turn heads while cheating the wind. The lower-profile hood scoop from the standard WRX aids forward visibility but maintains airflow to the intercooler due to the improved aerodynamics of the redesigned front-end. The WRX STI also gains daytime running lights (DRL).
