2003 Porsche Boxster - Maintenance & Specs
The 2003 Porsche Boxster belongs to a Porsche Boxster lineup that Know Your Ride tracks across 12 model years, from 1997 to 2008. Engine options on record include the 2.7L, 3.2L. It is configured as rear-wheel drive with a manual 5-spd. The 2003 sits mid-run, with both earlier (1997) and later (2008) Boxster model years also documented.
It takes 0W-40 full synthetic oil, 4.5 qt with a new filter meeting A40. Fluid specs on file include G13/G12++ coolant, DOT 4 brake fluid. Know Your Ride lists 14 scheduled maintenance items for this vehicle, the earliest interval falling at 10,000 miles. Documented torque values include oil drain plug 20 ft-lb, lug nut 96 ft-lb, spark plug 18 ft-lb.
There are 4 safety recalls on record; one covers: Porsche Cars North America, Inc. (Porsche) is recalling certain 2003-2020 Porsche Macan, Cayenne, Panamera, and Cayman S, 2001-2004 Boxster, Boxster.... Its overall reliability signal is rated "Excellent" based on aggregated complaint and crash data.
EPA fuel economy is rated at 18 city / 27 highway MPG, 21 MPG combined. Estimated annual fuel cost is about $2,750.
Quick Specs
| Oil viscosity | 0W-40 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 4.5 qt |
| OEM oil spec | A40 |
| EPA combined | 21 MPG |
| Coolant | G13/G12++ |
| Open recalls on record | 4 |
| Technical service bulletins | 16 |
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
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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.