Model

1.5 L DOHC non-turbo

2.0 L DOHC non-turbo

2.5 L DOHC turbo

Engine type

Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine

Valve arrangement

DOHC

Bore × stroke

mm (in)

77.7 × 79 (3.059 × 3.11)

92 × 75 (3.62 × 2.95)

99.5 × 79 (3.92 × 3.11)

Displacement

cm³ (cu in)

1,498 (91.41)

1,994 (121.67)

2,457 (149.9)

Compression ratio

10.1

10.2

8.4

Ignition order

1 — 3 — 2 — 4

Idle speed at Park or Neutral position

rpm

650

700

Maximum output

kW (PS)/rpm

79 (107) /6,000

110 (150) /6,400

WRX-S: 169 (230) /5,200

WRX-SS: 195 (265) /6,000

Maximum torque

N·m (kgf-m, ft-lb)/rpm

142 (14.5, 104.9) /3,200

196 (20.0, 137) /3,200

WRX-S: 320 (32.6, 236) /2,800

WRX-SS: 343 (35.0, 253) /4,000

Engine type

Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke diesel engine

Valve arrangement

Overhead camshaft

Bore × stroke

mm (in)

86 × 86

(3.386 × 3.386)

Displacement

cm³ (cu in)

1,998 (121.90)

Compression ratio

16.3

Idle speed at Park or Neutral position

rpm

800

Maximum output

kW (PS)/rpm

110 (150)/3,600

Maximum torque

N·m (kgf-m, ft-lb)/rpm

350 (35.7, 258)/1,800 — 2,400