2004 Subaru WRX - Maintenance & Specs
The 2004 Subaru WRX belongs to a Subaru WRX lineup that Know Your Ride tracks across 10 model years, from 2003 to 2026. The 2004 sits mid-run, with both earlier (2003) and later (2026) WRX model years also documented.
It takes 5W-30 full synthetic oil, 4.4 qt with a new filter meeting API SN. Fluid specs on file include Super Long Life coolant, DOT 4 brake fluid, Subaru ATF HP transmission fluid. Know Your Ride lists 15 scheduled maintenance items for this vehicle, the earliest interval falling at 7,500 miles. Documented torque values include oil drain plug 33 ft-lb, lug nut 89 ft-lb, spark plug 18 ft-lb.
There are 5 safety recalls on record; one covers: Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (STI included), 2003-2014.... Its overall reliability signal is rated "Excellent" based on aggregated complaint and crash data.
Quick Specs
| Oil viscosity | 5W-30 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 4.4 qt |
| OEM oil spec | API SN |
| Oil filter | K&N HP-1008 |
| Tire size | 245/60R18 |
| Coolant | Super Long Life |
| Open recalls on record | 5 |
| Technical service bulletins | 8 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
Related Vehicles
Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.