Parts for your 2018 Toyota Vitz|yaris-Ball joints

2018 Toyota Vitz/Yaris Ball Joints: what they do and when to sort them

Yes, ball joints are used on the 2018 Toyota Vitz/Yaris. Technical sources including the Toyota Repair Manual for the XP130/XP150 series, the Toyota New Car Features (NCF) manual, and the Toyota Electronic Parts Catalogue show a front MacPherson strut suspension with a lower ball joint connecting the steering knuckle to the front lower control arm. The rear uses a torsion beam axle, so there are no rear ball joints on this model.

On this Vitz/Yaris, the front lower ball joints act like the hip of the wheel assembly, letting the hub pivot for steering while the suspension moves up and down. They carry a surprising amount of load, cop the brunt of bumps and kerbs, and still need to keep steering feel tight and predictable.

Most genuine and quality aftermarket ball joints for this model are sealed units—no grease nipples—so the focus in servicing is regular inspection and timely replacement when wear shows up. A shop will typically check them at each service interval by lifting the front wheels, inspecting the dust boot for splits or grease seepage, and testing for play with a lever under the tyre while watching the joint. Any looseness, roughness, torn boots or rust staining around the stud means it’s time to replace.

Common signs the 2018 Vitz/Yaris ball joints are on the way out include:

• Clunks over bumps or when turning at low speed
• Vague steering, tramlining, or the car wandering
• Uneven or rapid inner-edge tyre wear
• Vibration through the steering, especially on rough roads

Replacement is straightforward for a technician: depending on the market and brand used, the joint may be a bolt-on unit to the knuckle or come pre-fitted in a new lower control arm. Fresh hardware and a new cotter pin should be used, and torque settings followed from the Toyota manual. A wheel alignment is essential afterwards to keep steering sharp and tyre wear even.

How long do they last? With normal city and motorway use, many see well over 100,000 km, but rough rural roads, heavy potholes, and big wheels can shorten that. Given the safety risk of a severely worn joint, it’s smart to have them checked at each service or whenever new tyres go on. Sticking with reputable brands (or genuine Toyota) will usually deliver the best feel and durability for Aussie and Kiwi conditions.

Popular questions

Do the 2018 Vitz/Yaris have rear ball joints?
No. The rear suspension is a torsion beam axle without ball joints. Only the front suspension uses lower ball joints between the knuckle and lower control arm, as detailed in Toyota’s New Car Features and repair information for the XP130/XP150 series.

How often should the ball joints be inspected?
They’re sealed-for-life parts, so there’s no greasing, but they should be inspected at every service or tyre rotation. Any play, torn boots, or noise means replacement. Always follow Toyota’s repair manual guidance for checks and torque specs.

Will replacing ball joints require a wheel alignment?
Yes. Disturbing the knuckle/control arm relationship can nudge alignment out. A post-repair alignment keeps steering straight and prevents premature tyre wear—worth doing straight after the job.