| Model |
WRX-S, WRX |
STI-S, STI, SE |
| Fuel tank |
L (US gal, Imp gal) |
64 (16.9, 14.1) |
| Engine oil |
Total capacity (at overhaul) |
L (US qt, Imp qt) |
5.0 (5.3, 4.4) |
| When replacing engine oil and oil filter |
L (US qt, Imp qt) |
4.2 (4.4, 3.7) |
4.3 (4.5, 3.8) |
| When replacing engine oil only |
L (US qt, Imp qt) |
4.0 (4.2, 3.5) |
| Transmission gear oil |
L (US qt, Imp qt) |
3.5 (3.7, 3.1) |
4.1 (4.3, 3.6) |
| Rear differential gear oil |
L (US qt, Imp qt) |
0.8 (0.8, 0.7) |
1.0 (1.1, 0.9) |
| Power steering fluid |
L (US qt, Imp qt) |
0.7 (0.7, 0.6) |
| Engine coolant |
L (US qt, Imp qt) |
7.4 (7.8, 6.5) |
7.7 (8.1, 6.8) |