The standard, naturally aspirated 2.5i trim on this Outback generation — the same documented head gasket design as the turbocharged version, without the additional heat and boost-related stress layered on top.
The Outback's wagon body is an easy, unstressed load for this naturally aspirated engine — mechanically it's the same EJ25 family covered on this model's turbocharged page, sharing that engine's well-documented head gasket design.
Without a turbocharger adding boost-related heat and stress, this version of the engine runs somewhat cooler and under less strain than the XT turbo trim — the head gasket concern still applies, but the operating conditions are gentler.
This is about the car itself — for engine-specific failure points, see the dedicated engine page below.
This naturally aspirated Outback shares its EJ25 engine family, and that engine's documented head gasket concern, with the turbocharged XT version of the same generation. The full checklist lives on the shared engine page.
FULL ENGINE BREAKDOWNSubaru 2.5L EJ25 Flat-Four — Reliable or Not →This is non-negotiable: ask whether the head gasket has been proactively replaced with the revised design, and get documentation if so.
Check for a sweet coolant smell or visible seep near the lower edge of the cylinder head, the hallmark symptom.
Check coolant level consistency over a few days if possible, since a slow external leak may not be immediately obvious on a single inspection.