IsItAGoodCar
Reliability Guide

Common Problems with the
2004–2005 Subaru Outback Mk3 (BP)

We've identified 1 known issue that can affect the 2004–2005 Subaru Outback Mk3 (BP). 1 of these are serious faults that could be expensive to repair.

1
Known Issues
1
Serious
0
Moderate
0
Minor

All Known Issues

Head Gasket Failure (2.5L Petrol)

SeriousEngine

While slightly improved, the 2.5L petrol still suffers from external head gasket leaks that eventually require an engine-out repair.

Est. Repair Cost: £1,200–£2,000
Warning Signs:

Oil leaking onto exhaust (smell of burning oil), Coolant loss, Overheating

What to Inspect:
  • Inspect the underside of the engine for leaks
  • Look for bubbles in the expansion tank
Verified by IsItAGoodCar Research Team

Buying Tips for 2004–2005 Subaru Outback Mk3 (BP)

  • ✓Treat early Boxer Diesel (2.0D) models with extreme caution; they are prone to catastrophic crankshaft failure.
  • ✓Check the operation of the self-levelling rear suspension; if it sags, it is expensive to fix with genuine parts.
  • ✓Listen for front CV joint clicking on full lock, as the boots often split and let in grit.
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Check a 2004–2005 Subaru Outback Mk3 (BP) by Registration