Parts for your 2023 Mazda 3-Strut mounts

2023 Mazda 3 Strut Mounts — What They Do and When to Replace

Technical sources confirm the 2023 Mazda 3 (BP) uses MacPherson struts at the front, which require dedicated upper strut mounts. The Mazda 3 (BP) Workshop Manual Front Suspension section outlines a MacPherson-strut assembly with a mounting rubber and bearing at the top. Autodata’s suspension layout also shows MacPherson front and a torsion-beam rear, and major catalogues from KYB and Monroe list front strut mounts for 2019–2023 Mazda 3. That means strut mounts are relevant on the front axle, the rear torsion-beam doesn’t use strut mounts.

On the front of a 2023 Mazda 3, the strut mount’s job is twofold: it isolates noise and vibration from the body, and it lets the strut rotate smoothly as the wheels steer. The rubber insulator keeps harsh bumps, tyre roar, and road chatter out of the cabin, while the integrated bearing allows the strut to pivot without binding. A healthy mount helps the car track straight, keeps steering feel consistent, and protects the strut from side-load stress.

Because the mount sits under the bonnet where moisture and grit can creep in, its rubber and bearing gradually wear. That wear shows up as vague steering, knocks over sharp bumps, or a groan as you turn the wheel. Leaving it too long can accelerate tyre wear and put extra strain on the strut and spring seats, which isn’t ideal on Aussie and Kiwi roads that can be a bit rougher outside the city.

• Common signs it’s time: clunks on potholes or speed humps, creaks when turning, steering that doesn’t return normally, pulling or tramlining, visible cracking of the mount rubber, or uneven tyre wear.
• Service tips: inspect the mounts every 20,000–30,000 kilometres or at each major service/tyre rotation. Spin the top bearing for smoothness with the strut unloaded, check for perished rubber, and look for rust at the turret.
• Replacement advice: change mounts in axle pairs, fit new bearings with the mounts, torque everything to spec, and get a proper wheel alignment straight after. OE-quality parts and correct spring compressor setup are a must.

Note that only the front of the 2023 Mazda 3 has strut mounts, the rear torsion-beam uses separate dampers and bushes. If a WOF or RWC check flags front-end noise or play, strut mounts are a prime suspect alongside the struts themselves.

Popular questions about 2023 Mazda 3 strut mounts

Does the 2023 Mazda 3 actually have strut mounts?
Yes — on the front only. Technical references including the Mazda 3 (BP) Workshop Manual and Autodata show a MacPherson-strut front end with an upper mount and bearing. The rear is a torsion-beam setup, so there are no rear strut mounts.

How long do front strut mounts last on a Mazda 3?
In typical Australian and New Zealand driving, many last 80,000–150,000 kilometres. Life depends on road quality, loads, and climate. Inspect them at each major service, replace sooner if you hear clunks or feel steering roughness.

Do you need a wheel alignment after replacing strut mounts?
Absolutely. Removing the strut disturbs camber and caster relationships. After any mount or strut work, a four-wheel alignment is recommended to protect tyres and restore handling.