Parts for your 2013 Subaru Impreza-Wheel bearings

2013 Subaru Impreza wheel bearings: what they do, and when to replace them

Yes, the 2013 Subaru Impreza definitely uses wheel bearings. Technical references confirm this: the Subaru Factory Service Manual for the 2013 Impreza (GP/GJ) details “Front Axle – Hub Unit Bearing” and “Rear Axle – Rear Hub Unit Bearing” procedures, and the Subaru Electronic Parts Catalogue lists sealed hub-and-bearing assemblies for both front and rear. Many units on these models are supplied by tier‑one bearing manufacturers such as NSK/NTN as integrated, non-serviceable hub modules.

On this Impreza, the wheel bearings are sealed, unitised hub assemblies that let each wheel spin freely while carrying the car’s weight and keeping the wheel precisely located. They also help maintain crisp steering feel and correct ABS operation because the tone ring or encoder is built into the hub. When they start to fail, there’s more rolling resistance, heat, and play, which can affect braking, tyre wear, and stability.

Because they’re sealed, there’s no regular greasing or adjustment required. Maintenance is mainly about inspection and timely replacement. During routine servicing, a good workshop will road test for a speed‑related hum or growl, check for play by rocking the wheel at 12 and 6 o’clock, spin the wheel for roughness, and look for ABS faults that could come from a damaged encoder. On Aussie and Kiwi roads—think coarse‑chip surfaces, water crossings, and coastal exposure—bearings can cop a harder life, so earlier wear isn’t uncommon, especially past the 100,000–200,000 kilometre mark.

• Common signs it’s time: a humming that rises with speed, a rumble that changes when gently weaving, heat at the hub, ABS light, or uneven tyre wear.
• Replacement tips: these hubs are bolt‑in units on the 2013 Impreza. Replace the affected side, use quality parts, renew the axle nut and any single‑use bolts, torque to spec, and protect the ABS sensor. An alignment check after front hub work is a smart move.
• Driving with a noisy bearing isn’t recommended—it can escalate quickly, damage the hub/knuckle, and compromise safety.

Done properly, a fresh hub assembly restores that smooth, quiet glide and keeps the Impreza tracking straight. For owners chasing long service life, stick with reputable OEM‑equivalent hubs and keep tyres correctly inflated and balanced so the bearings aren’t working harder than they need to.

FAQs

How long do wheel bearings typically last on a 2013 Impreza?
Many last beyond 150,000 kilometres, but rough roads, potholes, water ingress, wheel impacts, and oversized wheels can shorten that. If there’s any humming, play, or ABS irregularities, get it checked sooner rather than later.

Is it safe to drive with a noisy wheel bearing?
Not really. Noise often means internal wear. Continued driving can overheat the hub, affect braking and ABS behaviour, and in worst cases lead to loss of wheel control. It’s best to book it in promptly.

Do both wheel bearings need replacing at the same time?
Not necessarily. Replace the failed side first. If the vehicle has high kilometres or the opposite side shows similar noise/play, doing both can save a second visit, but it isn’t mandatory.