| Engine | Class | A Type | B Type | C Type | D Type | E Type | F Type | G Type |
| DOHC 2.2l Turbo | 22b STi | 280/37.0 | ||||||
| DOHC 2.0L Turbo | Type RA STi/Type R STi | 275/32.5 | 280/35.0 | 280/36.0 | <- | <- | ||
| DOHC 2.0L Turbo | Sedan STi | 250/31.5 | 275/32.5 | 280/35.0 | 280/36.0 | <- | <- | |
| DOHC 2.0L Turbo | Sedan Type RA | 240/31.0 | <- | 260/31.5 | 280/33.5 | <- | <- | 280/34.5 |
| DOHC 2.0L Turbo | Sedan E-4AT | 220/28.5 | ||||||
| DOHC 2.0L Turbo | Wagon STi | 250/31.5 | 260/31.5 | 280/35.0 | 280/36.0 | <- | <- | |
| DOHC 2.0L Turbo | Wagon | 220/28.5 | <- | 240/31.0 | 250/31.2 | 240/31.5 | <- |
| Type | A, B Type | C Type | D, E Type | F, G Type | |
| Engine type | EJ20G | <- | EJ20K | EJ205 | |
| Power (ps/rpm) | 240/6000 | 260/6500 | 280/6500 | <- | |
| Torque (kg * m/rpm) | 31.0/5000 | 31.5/5000 | 33.5/5000 | 34.5/5000 | |
| Displacement (cc) | 1994 | <- | <- | <- | |
| Bore X stroke (mm) | 92x75 | <- | <- | <- | |
| Compression ratio | 8.5 | <- | 8.0 | 8.0 | |
| Cylinder block structure | Closed deck | Open deck (as for RA closed) | Open deck | Open deck | |
| Valve clearance adjustment method | HLA | HLA (as for RA inner shim) | Outer shim | Outer shim | |
| Ignition system | Direct | Direct | Simultaneous ignition | Simultaneous ignition | |
| Piston | Casting | Casting | Casting | Casting | |
| TURBO part number | 14412AA090 A9211-B9311 14412AA091 B9312-C9501 |
14412AA091 B9312-C9501 14412AA092 C9502-C9608 |
14412AA130 D9609-D9609 14412AA131 D9610-D9703 14412AA132 D9704-D9708 14412AA220 E9709-E9808 |
14411AA300 F8708- | |
| Type | TD05H | TD05H | RHF5HB | RHF5HB | |
| Boost Pressure (mmHg) | 600 | 650 | 750 | 750 |
| Type | B Type STi | C Type STi, RA-STi | D Type STi, R/RA-STi | D Type STi, R/RA-STi | F, G Type STi, R/RA-STi | E Type 22b STi | |
| Engine type | EJ20G | <- | EJ20K | EJ20K | EJ205 | EJ22K | |
| Capacity (ps/rpm) | 250/6500 | 275/6500 | 280/6500 | <- | <- | <- | |
| Torque (kg * m/rpm) | 31.5/5000 | 32.5/5000 | 35.0/5000 | 36.0/5000 | <- | 37.0/5000 | |
| Displacement (cc) | 1994 | <- | <- | <- | <- | 2212 | |
| Bore X stroke (mm) | 92x75 | <- | <- | <- | <- | 96.9x75 | |
| Compression ratio | 8.5 | <- | 8.0 | <- | 8.5 | 8.0 | |
| Cylinder block structure | Closed deck | Closed deck | Open deck | Open deck | Open deck | Open deck | |
| Valve clearance adjustment method | Lightweight HLA | Inner shim | Inner shim | Inner shim | Inner shim | Inner shim | |
| Ignition system | Direct | Direct | Simultaneous ignition | Simultaneous ignition | Simultaneous ignition | Simultaneous ignition | |
| Piston | Forging | Forging | Forging | Forging | Forging | Forging | |
| TURBO part number | 14412AA091 B9312-C9501 | 14412AA091 B9312-C9501 14412AA092 C9502-C9608 |
14412AA170 D9609-D9703 14412AA172 D9704-D9708 |
14412AA220 E9709-E9808 | 14411AA300 F8708- | 14412AA220 E9709-E9808 | |
| Type | TD05H | TD05H | RHF5HB | RHF5HB | RHF5HB | RHF5HB | |
| Boost pressure (mmHg) | 600 | 700 | 800 | 800 | 800 | ? |