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MajorCommonSuspension

Subaru STI: Front Wheel Bearing Failure - AWD Stress

Front Wheel Bearing Failure - AWD Stress is a common suspension fault on the Subaru STI on the 1992–2021 cars, and we rate it major. Putting it right costs $350 to $900 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 32 documented faults on the Subaru STI.

Vehicle
Subaru STI
Years
1992–2021
Fuel
petrol
System
Suspension

This page covers the Subaru STI 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 STI faults32 documented faults on this model

What you are looking at

No photograph available

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

What goes wrong

All WRX generations (GC8 through VA) experience accelerated front wheel bearing wear compared to FWD equivalents. The symmetrical AWD system places higher constant loading on front bearings, and the WRX's combination of AWD torque, performance driving, and NZ/AU road conditions worsens wear rates. Track use, kerb strikes, and neglected alignment dramatically shorten bearing life. Failure is progressive and, if ignored, leads to catastrophic bearing collapse and potential wheel separation.

What you would notice

  • Droning or humming noise from front wheels that changes with speed
  • Noise changes when turning left or right (load-shifting test)
  • Vibration through steering wheel at speed
  • Roughness or play felt when rocking wheel at 12 and 6 o'clock
  • Grinding noise at low speed in carparks

How to check it

Where to look. Front wheel hub/bearing assemblies, both left and right sides

  1. Rock the wheel at 12 and 6 o'clock checking for play.

  2. Drive at 60-80 km/h and weave gently - a change in drone pitch indicates a failing bearing.

  3. Check for any kerb or pothole damage history.

  4. If a workshop inspection is possible: Jack each front corner and rotate wheel by hand - feel for roughness or grinding.

Parts involved: Wheel bearing.

What it costs to put right

$350 to $900 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

  • “Has the car been used on track or driven hard?”
  • “Have the front wheel bearings been replaced and if so when?”
  • “Has the car had any kerb or pothole damage?”
  • “Is there any humming or droning noise at highway speed?”

Now check the Subaru STI 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 STI buyer questions

Is front wheel bearing failure - awd stress serious on a Subaru STI?

We rate it major and common on the Subaru STI. All WRX generations (GC8 through VA) experience accelerated front wheel bearing wear compared to FWD equivalents. The symmetrical AWD system places higher constant loading on front bearings, and the WRX's combination of AWD torque, performance driving, and NZ/AU road conditions worsens wear rates. Track use, kerb strikes, and neglected alignment dramatically shorten bearing life. Failure is progressive and, if ignored, leads to catastrophic bearing collapse and potential wheel separation.

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

$350 to $900 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 STI years are affected?

Our research records this fault on the 1992–2021 Subaru STI. 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?

Rock the wheel at 12 and 6 o'clock checking for play. Drive at 60-80 km/h and weave gently - a change in drone pitch indicates a failing bearing. Check for any kerb or pothole damage history. If a workshop inspection is possible: Jack each front corner and rotate wheel by hand - feel for roughness or grinding. Look here: Front wheel hub/bearing assemblies, both left and right sides