Parts for your 2018 Toyota Mark x-Engine mount

2018 Toyota Mark X engine mount — what it does and when to replace it

Technical sources confirm the 2018 Toyota Mark X (GRX130 series, 4GR‑FSE/2GR‑FSE V6) absolutely uses engine mounts. Toyota’s Global Service Information (TIS) Repair Manual for the GRX130 includes an “Engine Mounting” procedure, and the Toyota Electronic Parts Catalogue (EPC) lists left and right “engine mounting insulators” plus a transmission mount for this model. Aftermarket catalogues used across AU/NZ also list hydraulic mounts for the GRX130 platform, further verifying fitment. So yes—engine mounts are relevant and fitted to the 2018 Mark X.

On this car, the engine mounts are hydraulic insulators designed to hold the V6 in place while soaking up vibration. They keep the cabin calm at idle, stop harshness when taking off, and maintain proper driveline alignment so the exhaust, cooling, and steering gear aren’t stressed. Over time, heat, fluid breakdown and general fatigue can cause the rubber and fluid inside the mounts to deteriorate. When that happens, the Mark X can feel a bit coarse, with a shudder through the wheel or seats, or a knock as the engine rocks on and off the throttle.

As part of routine servicing, it’s smart to give the mounts a quick once‑over from underneath. Look for split rubber, collapsed height, shiny witness marks from excessive movement, or oily residue from a leaking hydraulic mount. Any of these are a cue to plan a replacement.

• Common clues it’s time: more vibration at idle in Drive, clunks on gear changes, engine movement on start/stop, and a buzzy feel around 1,000–1,500 rpm.
• Typical lifespan: often 100,000–180,000 km, but shorter with lots of heat, stop‑start driving, or performance use.
• Replacement tips: support the engine with a hoist or support bar, remove the under covers, and replace mounts one side at a time. Torque all fasteners to factory spec and recheck after a short shakedown drive.
• Parts choice: stick with genuine or quality OE‑equivalent hydraulic mounts to keep NVH as Toyota intended.

There’s no set interval to replace mounts—inspect them every major service (say, 40,000–60,000 km). If a subframe needs to be lowered during the job, factor in a wheel alignment check. After installation, listen for any new vibrations and make sure idle quality is smooth—your Mark X should feel nicely settled when the mounts are healthy.

Popular questions about 2018 Toyota Mark X engine mounts

How do you tell if the Mark X’s engine mounts are worn?
Expect extra vibration in the cabin at idle, a knock when shifting between Reverse and Drive, and more engine movement when you blip the throttle. Under the bonnet, split rubber or leaked hydraulic fluid on a mount is a giveaway.

How long do engine mounts last on a 2018 Mark X?
With normal Aussie or Kiwi commuting, many last 100,000–180,000 km. Lots of stop‑start, heat, or hard launches can shorten that. Regular inspections during major services help catch issues before they get annoying.

Is it safe to keep driving with a bad engine mount?
It’ll usually still drive, but it’s not ideal. Excess movement can stress exhaust joints, hoses and wiring, and the harshness gets old fast. Replacing tired mounts restores refinement and protects the rest of the driveline.