CriticalCommonEngine

Subaru Forester: EJ Engine Timing Belt Failure (Interference Engine)

EJ Engine Timing Belt Failure (Interference Engine) is a common engine fault on the Subaru Forester on the 1997–2012 cars, and we rate it critical. Putting it right costs $850 to $1,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 50 documented faults on the Subaru Forester.

Vehicle: Subaru Forester
Years: 1997–2012
Fuel: petrol
System: Engine

This page covers the Subaru Forester as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Subaru Forester faults50 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Timing belt yet. We would rather show none than show a picture of a different part.

What goes wrong

All EJ-series engines in the SF, SG, and SH Forester use a rubber timing belt driving the camshafts on an interference engine layout, meaning belt failure causes immediate and catastrophic valve-to-piston contact. Subaru specifies replacement at 100,000 km or 10 years but many NZ/AU used imports arrive with unknown service history. The belt tensioner, idler pulleys, and water pump are driven by the same belt and should be replaced simultaneously. A failed water pump bearing is a common secondary cause of belt snap.

What you would notice

No prior warning — engine stops suddenly and will not restart
Engine cranks but does not fire (if belt has slipped teeth)
Ticking or rattling from timing cover area at idle
Coolant leak from water pump weep hole (precursor to belt failure)

How to check it

Where to look. Front of engine, behind timing cover on right-hand (passenger) side

Request full service history and confirm timing belt replacement at or before 100,000 km.
If no record exists, budget for immediate replacement.
Inspect timing cover for oil contamination (cam seal leaks degrade belt rubber).
Check water pump for weeping from the drain hole beneath the pump body.
On SH models with AVCS, confirm camshaft position sensor operation.

Parts involved: Timing belt.

What it costs to put right

$850 to $1,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Can you provide a receipt or stamp showing timing belt replacement, and at what odometer reading?”
“Was the water pump, tensioner, and idlers replaced at the same time?”
“Has any oil leak from the cam or crank seals been repaired?”

Now check the Subaru Forester you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Subaru Forester buyer questions

Is ej engine timing belt failure (interference engine) serious on a Subaru Forester?

We rate it critical and common on the Subaru Forester. All EJ-series engines in the SF, SG, and SH Forester use a rubber timing belt driving the camshafts on an interference engine layout, meaning belt failure causes immediate and catastrophic valve-to-piston contact. Subaru specifies replacement at 100,000 km or 10 years but many NZ/AU used imports arrive with unknown service history. The belt tensioner, idler pulleys, and water pump are driven by the same belt and should be replaced simultaneously. A failed water pump bearing is a common secondary cause of belt snap.

How much does it cost to fix on a Subaru Forester?

$850 to $1,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Subaru Forester years are affected?

Our research records this fault on the 1997–2012 Subaru Forester. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Request full service history and confirm timing belt replacement at or before 100,000 km. If no record exists, budget for immediate replacement. Inspect timing cover for oil contamination (cam seal leaks degrade belt rubber). Check water pump for weeping from the drain hole beneath the pump body. On SH models with AVCS, confirm camshaft position sensor operation. Look here: Front of engine, behind timing cover on right-hand (passenger) side