Parts for your 2017 Subaru Impreza-Wheel bearings

2017 Subaru Impreza wheel-bearings: what they do and when to replace them

Referencing technical sources, wheel-bearings are absolutely relevant and fitted to the 2017 Subaru Impreza. The Subaru Factory Service Manual for 2017MY Impreza (GK/GT) and the Subaru Electronic Parts Catalogue specify sealed hub unit bearings on all four corners, with removal and installation procedures for the front and rear hub assemblies. That confirms the Impreza uses integrated, non-serviceable wheel-bearings that are replaced as complete hub units.

On this model, the wheel-bearings are sealed hub assemblies that support the wheel and hub, letting them rotate smoothly while carrying the car’s weight and dealing with cornering loads. They also house the magnetic encoder ring for ABS/ESC, so a failing bearing can trigger warning lights as well as noise. Because the units are sealed, they’re not greased or adjusted during routine servicing — they’re inspected and replaced when worn.

For owners and workshops across Australia and New Zealand, the goal is simple: keep the Impreza rolling quietly and safely. Typical signs it’s time to change a hub unit include a humming or droning that rises with road speed, a rumble that changes when gently swerving left or right, ABS or stability control lights due to a damaged encoder, or detectable play when the wheel is rocked at 12 and 6 o’clock. Tyre cupping or uneven wear can also hint at a rough bearing.

• Inspection tips: listen for speed-related hums on coarse-chip roads, check for free play on a hoist, and scan for ABS faults if lights appear.
• Replacement notes: these are bolt-on hub units, no re-greasing or shimming. Correct axle-nut torque is critical to bearing life — don’t rattle-gun it home. Replace any single-use fasteners and recheck wheel alignment after rear hub work.
• Service life: sealed bearings often last well past 150,000–200,000 km, but rough roads, kerb hits, flooding, or oversized wheels can accelerate wear.

A good service routine for a 2017 Impreza is a road test for noise, a quick wheel play check during tyre rotations, and prompt replacement of any noisy hub. Leaving a failing bearing can lead to heat, sensor damage, extra tyre wear, and in bad cases, brake and hub issues. Fit quality parts, torque everything to spec, and it’ll stay quiet for ages.

Popular questions

How long do wheel-bearings typically last on a 2017 Subaru Impreza?
Many owners see 150,000–200,000 km or more from the original hubs. Life depends on road conditions, impacts with potholes or kerbs, water ingress, and wheel/tyre setups. Regular checks during services help catch issues early before they snowball.

Is it safe to drive with a noisy wheel-bearing?
Short trips to a workshop are usually fine if the noise is mild, but ongoing driving isn’t wise. A failing bearing can overheat, increase stopping distances, upset ABS/ESC signals, and in extreme cases damage the hub or knuckle. Best to book it in promptly.

Do the Impreza’s wheel-bearings need greasing during a service?
No. The 2017 Impreza uses sealed hub unit bearings. They’re not serviceable and don’t require greasing or adjustment. When worn or noisy, the complete hub assembly is replaced and torqued to specification.