Parts for your 2020 Toyota Prius-Strut mounts

2020 Toyota Prius strut mounts: what they do and when to replace them

Strut mounts are relevant and fitted to the 2020 Toyota Prius at the front. Technical documentation such as Toyota’s Repair Manual for the ZVW50-series Prius (Front Suspension – MacPherson Strut Type) specifies a front “front suspension support sub-assembly” (strut mount) with an integrated bearing for steering. Toyota’s New Car Features manual for Gen 4 Prius also shows a MacPherson front layout, and major parts catalogues from suspension manufacturers list dedicated front strut mounts for the 2020 model. The rear of this Prius uses a multi-link/double-wishbone arrangement with separate shocks and springs, so there are no rear strut mounts.

On the 2020 Toyota Prius, the front strut mounts sit at the top of each MacPherson strut. They isolate vibration and road harshness from the cabin, keep the strut properly located in the body, and (via the built-in bearing) let the strut turn smoothly as the steering is moved. When they age, the rubber can crack or collapse and the bearing can bind, which leads to noise and vague steering. While there’s no fixed replacement interval, they’re a wear item and worth inspecting whenever front struts are serviced.

Typical signs the front strut mounts may be due:

• Clunks or knocks over speed humps and potholes
• Notchy or creaky steering at low speeds
• Front-end shimmy, tramlining, or imprecise steering feel
• Uneven or rapid front tyre wear despite correct pressure
• Visible perishing of the rubber, or a sagged mount height

Best practice on a Prius is to replace strut mounts whenever front struts are changed, or at the first sign of bearing roughness. Do them in pairs to keep handling consistent left-to-right. During service, always mark the mount orientation, compress the spring with quality compressors, and use new self-locking nuts where specified. Torque the top hardware with the strut supported, and snug the lower control arm fasteners with the vehicle at normal ride height to avoid bushing preload. A wheel alignment is essential afterwards. For owners in Australia and New Zealand, adding a strut mount check to each service or WOF/roadworthy inspection (around every 10,000–15,000 km) helps catch wear early. If the Prius has lived on coarse chipseal or carries heavy loads, consider earlier replacement. Quality OEM-equivalent mounts restore quietness, steering precision, and tyre life.

FAQs

How long do front strut mounts last on a 2020 Prius?

Many see 100,000–160,000 km, but life varies with road quality and load. City cars with lots of steering at low speed or vehicles driven on rough chipseal may need mounts sooner. Inspect at each service once past 80,000 km and replace with the struts for best results.

Can worn strut mounts cause steering noise on a Prius?

Yes. The integrated bearing can dry out or pit, causing creaks or a notchy feel when turning the wheel, especially at parking speeds. If there’s noise combined with clunks over bumps, plan on new mounts and a fresh alignment.

Should strut mounts be replaced with the struts?

It’s recommended. The mount and bearing age alongside the strut, and reusing a tired mount can transfer noise into a brand-new damper. Replacing mounts, bearings, dust boots and bump stops together delivers the best ride and saves labour in the long run.