Toyota Avensis Engine Mount: Specs, Fitment & Common Faults

On the Avensis, excessive vibration at idle, lessening in Park, is genuinely the most common documented symptom of a failing mount.

Illustration for editorial purposes

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OEM Part Number: 12305-0D100

Genuinely important to know: genuinely worth knowing: most Avensiss use three separate mounts (engine, transmission, and a rear torque strut) rather than one part covering the whole job — check which one is actually worn (a common DIY mistake is replacing all three when only one has failed) before ordering.

2006-2018, 1.6/1.8 petrol, genuine right engine mount	Toyota OEM: 12305-0D100 (also referenced as 12305-0T070) — shared with Corolla of the same engine family
Transmission mount & rear torque strut	Genuinely separate part numbers to the mount shown above — sold individually, and worth inspecting together if chasing a vibration or clunk

A Genuinely Important Compatibility Warning Worth Knowing — Toyota Avensis Engine Mount

If your car has both hybrid and non-hybrid variants, this is genuinely worth knowing: hybrid and non-hybrid models commonly use different engine mount part numbers, despite looking broadly similar. Always verify your exact engine type before ordering a replacement mount, since fitting the wrong variant is a genuine, documented mistake worth avoiding.

Worth knowing if your car is a hybrid specifically: a worn mount can make the engine's frequent automatic starting and stopping (a normal characteristic of how the hybrid system operates) feel considerably harsher and more noticeable than it should — if this transition has started feeling like a jolt rather than a smooth changeover, a worn mount is genuinely worth investigating.

It's also worth knowing that excessive vibration at idle, particularly noticeable when stopped in Drive or Reverse and lessening in Park or Neutral, is the most common documented symptom of a failing mount — worth checking this specific pattern before assuming a more complex engine fault.

Toyota Avensis Engine Mount reference plate

Toyota Avensis Engine Mount: What It Does

Engine mounts secure the engine and transmission to the chassis while absorbing vibration and movement, preventing that vibration from transferring directly into the cabin. Most versions of the Avensis use several mounts working together — typically at least one on each side of the engine plus a torque mount — and a single failed mount can throw off the whole assembly's balance.

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Toyota Avensis Engine Mount: Symptoms, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Engine Mount Guide for warning signs to watch for (including some genuinely make-specific quirks in how they show up), confirming fitment against your VIN, and which aftermarket approach is worth trusting.

More Toyota Engine Mount

The same part, covered across other Toyota models.