2003 JAGUAR S-Type AJ-V8 4.0L/AJ25 2.5L V6 (X200)
X200 / 4-door Sedan / Global with regional engine variations (notably Europe, North America, and Asia)
AJ-V8 4.0LAJ25 2.5L V6AJ30 3.0L V6Exact year/trim recordSilver
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Timing chain tensioner noise in early V8s
- Electrical issues with door modules
- Coolant leaks from heater matrix
First checks
- Verify timing chain condition
- Inspect head gasket for leaks
- Check transmission adaptive learning reset
Before replacing parts
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- Market-dependent engine availability: V8 primarily North America, V6 trims more common in Europe and Asia.
- Engine oil service fill includes filter replacement; oil capacity varies slightly by engine variant.