Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007

Key specs

Subaru WRX (Hatchback) WRX STI Hatchback 2007,2008,2009,2010,2011

What is the body type, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

Hatchback, 5 Doors, 5 Seats

What is the fuel economy, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

10.3 l/100 km 22.84 US mpg
13.8 l/100 km 17.04 US mpg
8.2 l/100 km 28.68 US mpg

How much power, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

300 Hp @ 6000 rpm.
122.1 Hp/l

How fast is the car, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

250 km/h 155.34 mph

What is the engine size, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

2457 cm3
149.94 cu. in.

How many cylinders, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

4, Boxer

What is the drivetrain, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

All wheel drive (4x4),

How long is this vehicle, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

4415 mm
173.82 in.

How wide is the vehicle, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

1795 mm
70.67 in.

What is the curb weight, Subaru WRX STI Hatchback 2.5 (300 Hp) Turbo 2007?

1505 kg
3317.96 lbs.

Subaru WRX (Hatchback) WRX STI Hatchback 2007,2008,2009,2010,2011 Specs

General information

Brand Subaru
Model WRX (Hatchback)
Version WRX STI Hatchback
Engine version 2.5 (300 Hp) Turbo
Year production start 2007
Year production end 2011
Vehicle type Hatchback
Horsepower RPM 300 Hp @ 6000 rpm.
Acceleration 0 - 100 kmh sec 5.2 sec
Curb weight kg -lbs total

1505 kg

3317.96 lbs.
Overall length mm - inch

4415 mm

173.82 in.
Doors 5
Top Speed 250 km/h 155.34 mph

Engine specs

Designation model EJ257
Cam configuration DOHC
Engine position and orientation Front, Longitudinal
Cylinders 4
Position of cylinders Boxer
Displacement (liters)

2457 cm3

149.94 cu. in.
Eng. horsepower RPM 300 Hp @ 6000 rpm.
Horsepower per litre 122.1 Hp/l
Weight / horsepower kg/hp - hp/tons

5 kg/Hp

199.3 Hp/tonne
Weight / torque kg/Nm - Nm/tons 3.7 kg/Nm, 270.4 Nm/tonne

3.7 kg/Nm

270.4 Nm/tonne
Torque Nm RPM lb-ft RPM

407 Nm @ 4000 rpm.

300.19 lb.-ft. @ 4000 rpm.
Bore (mm in)

99.5 mm

3.92 in.
Stroke (mm in)

79 mm

3.11 in.
Compression ratio 8.2
Fuel delivery system Multi-point indirect injection
Fuel type Petrol (Gasoline)
Valvetrain 4
Engine aspiration Turbocharger, Intercooler
Engine oil liters | quarts

4.3 l

4.54 US qt | 3.78 UK qt
Powertrain architecture Internal Combustion engine
Engine location Front, Longitudinal

Transmission and Drive system

Drive configuration All wheel drive (4x4)
Transmission 6

Brakes

Front brakes Ventilated discs
Rear brakes Ventilated discs
Anti-lock brake system ABS (Anti-lock braking system)

Steering

Steering type Steering rack and pinion
Turning diameter m - ft

10.1 m

33.14 ft.

Suspension

Front suspension McPherson
Rear suspension Double wishbone

Body / Chassis

Wheels & Tyres

Wheels size 245/40 R18
Wheels rims 18

Exterior

Interior

Safety and Security

Passenger

Passengers seats 5

Dimensions

Overall length mm - inch

4415 mm

173.82 in.
Overall width mm -inch

1795 mm

70.67 in.
Overall height mm -inch

1475 mm

58.07 in.
Wheelbase mm - inch

2625 mm

103.35 in.
Track width front mm - inch

1530 mm

60.24 in.
Track width rear mm - inch

1540 mm

60.63 in.

Weights

Curb weight kg -lbs total

1505 kg

3317.96 lbs.
Fuel tank liters | gallons

60 l

15.85 US gal | 13.2 UK gal

Fuel economy

City l/100km - mpg

13.8 l/100 km

17.04 US mpg
Highway l/100 km - mpg

8.2 l/100 km

28.68 US mpg
Combined l/100 km - Mpg

10.3 l/100 km

22.84 US mpg
Autonomy km (combined use) 600

Engine type

4 CYLINDER - BOXER
What engine is the 4 cylinder boxer: the boxer-four is an engine where each pair
of opposed pistons moves inwards and outwards at the same time in two banks of
cylinders lying on opposite sides of a common crankshaft, named laso flat-four
or opposed-four.

What is the 4 cylinder boxer displacement: it is in a range between 1350 cc and
3000 cc in recent model line up powertrain.

How much is the power of the 4 cylinders boxer: the power of the 4 cylinders is
in a range from 98bhp to 365 bhp.Which cars use 4 cylinder boxer engine: 4 boxer is used by Porsche and Subaru but it has a strong heritage in powertrain production as have been used in cars by Volkswagen on the original iconic Beetle and Alfa Romeo.

The advantages of the boxer-four layout are perfect secondary vibration (resulting in minimal vibration), low centre of gravity and a short engine length. The layout also lends itself to efficient air cooling with the airflow being evenly distributed across the four cylinders. The downsides of boxer-four engines (compared with inline-four engines) are extra width, higher costs due to two cylinder heads instead of one and the long exhaust manifold required to achieve evenly spaced exhaust pulses.

The typical firing order for a boxer-four engine is for the left bank of cylinders to ignite one after another, followed by the right bank of cylinders with the firing interval evenly spaced at 180 degrees. The exhausts manifold from the two cylinders on each bank were merged and in result uneven exhaust pulses causing a characteristic "flat-four burble" exhaust sound as on Porsche 982 and 718 series with boxer 4.

The engine fires once every 180 degrees crankshaft angle (720 degrees divided by 4 = 180 degrees) and other common firing configuration (such as used by Subaru since the mid-2000s) is to pair the cylinders, with a firing interval of 360 degrees, in order to optimise the exhaust pulses. This configuration requires long exhaust manifolds to pair the cylinders on opposite banks and results in a less distinctive exhaust sound.

edited by arrabbiata

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