Parts for your 2021 Subaru Xv-Control arms

2021 Subaru XV Control Arms: Purpose, Care and When to Replace

Control arms are very much used on the 2021 Subaru XV. According to Subaru’s factory service manual for the GT-series XV and Subaru Global Platform technical material, the XV runs a MacPherson-strut front end with a lower control arm, and a rear double-wishbone layout with multiple lateral links (often called control arms). Genuine Subaru parts catalogues and major aftermarket listings in Australia and New Zealand (including SuperPro and MOOG) carry front lower control arms and bush kits for the 2018–2023 XV, which further confirms fitment.

On the front of the XV, the lower control arm locates the wheel hub and strut in the correct position and angle, keeping the tyre’s contact patch stable as the suspension moves. Its bushes absorb vibration and allow controlled movement, while the lower ball joint ties the arm to the steering knuckle so the wheel can steer smoothly. Down the back, the XV’s wishbone and links do the same job of keeping alignment true and ride quality tidy.

When the bushes wear or split, or the ball joint gets sloppy, the driver can cop vague steering, clunks over bumps, uneven tyre wear, or a shimmy under braking. Leaving it too long can chew out tyres and put extra stress on other suspension bits.

• Tell-tale signs: knocking over potholes, steering wander, twitchy turn-in, or scalloped tyre wear.
• Inspection tip: look for cracked or oil-soaked bushes, torn ball-joint boots, and rust around mounting points.

Replacement is straightforward workshop fare, but it’s not just a quick spanner spin. Always torque the arm’s pivot bolts at normal ride height so the rubber bushes sit neutral, doing them up with the car in the air can twist the bush and shorten its life. After any control arm or bush work, a full wheel alignment is a must to get camber and toe back in spec. Many owners opt for complete replacement arms for convenience, while others press in new bushes (polyurethane options from local brands can sharpen steering feel). Replace in pairs left/right to keep handling balanced, and use new hardware if specified by the manual. If the ball joint or its boot is worn, renew it at the same time—some complete arms include a fresh joint, others reuse the original.

With regular inspection at service intervals and prompt replacement when wear shows up, the XV’s control arms will keep the ride composed and the tyres wearing nice and even across Kiwi and Aussie roads.

Popular questions about 2021 Subaru XV control arms

How long do the control arm bushes typically last?
On a 2021 XV, many owners see 80,000–150,000 km from factory bushes, but it depends on road quality and driving style. Corrugations, heavy loads, and big temperature swings can age the rubber faster. A quick check at each service helps catch cracks or movement early before they affect tyre wear.

Do you need a wheel alignment after replacing control arms?
Yes—every time. Changing control arms or even just the bushes alters suspension geometry. A proper alignment brings toe and camber back to spec and keeps the Eyesight-equipped XV tracking straight. A steering angle sensor reset may be needed if the wheel isn’t centred after work.

Can you replace just the bushes, or is a full arm better?
Both approaches are common. Pressing in new bushes can be cost-effective and allows performance upgrades, while a complete arm is quicker to fit and often includes new bushes (and sometimes a ball joint). If multiple components are worn, the complete arm can save labour and hassle.