Engine; Fuel - Subaru WRX 2015 Owner's Manual

Engine

Model
Engine model
Engine type
Displacement cu-in (cc)
Bore 6 Stroke in (mm)
Compression ratio
Firing order

Fuel

NOTE
The engine is designed to operate using unleaded gasoline.
Model
STI
Except STI
*1: If unleaded gasoline with an octane rating of 93 AKI (98 RON) is not available, unleaded gasoline with an octane rating of 91 AKI (95 RON) may be
used with no detriment to engine durability or driveability.
*2: If unleaded gasoline with an octane rating of 91 AKI (95 RON) is not available, unleaded gasoline with an octane rating of 87 AKI (90 RON) or higher
may be temporarily used.
STI
EJ257
(2.5 L, DOHC, turbo)
Horizontally opposed, liquid cooled 4 cylinder, 4-stroke petrol engine
150 (2,457)
3.9 6 3.1 (99.5 6 79.0)
8.2 : 1
Fuel
1
93 AKI (98 RON) or higher*
2
91 AKI (95 RON) or higher*
Specifications/Specifications
Except STI
FA20
(2.0 L, DOHC, turbo)
121.9 (1,998)
3.39 6 3.39 (86.0 6 86.0)
10.6 : 1
1 3 2 4
Fuel tank capacity
15.9 US gal (60 liters, 13.2 Imp gal)
12-3
CONTINUED