Parts for your 2018 Subaru Impreza-Engine mount

2018 Subaru Impreza engine mount – purpose, care and when to replace

Based on technical sources including the Subaru Impreza (GK/GT) Service Manual, Engine section “Engine Mounting,” and the Subaru Genuine Parts Catalogue for the 2018 Impreza, this model absolutely uses engine mounts. The manuals describe the left and right engine mount insulators, removal/installation steps and torque specs, confirming the component is relevant and serviceable on the 2018 Subaru Impreza.

The engine mount on a 2018 Subaru Impreza does a deceptively big job. With the FB20 2.0‑litre boxer under the bonnet, the mounts support the engine’s weight, keep it aligned with the driveline, and soak up vibration so the cabin stays civilised. Subaru tunes these mounts to control torque reaction when taking off or shifting, cutting down on that annoying thump or shimmy that can creep in as parts age. Many Impreza mounts are fluid‑filled or carefully rubber‑bonded to tame NVH while still keeping the engine planted when the driver gives it a nudge.

There’s no fixed replacement interval in Subaru’s schedule, but inspection is smart maintenance—especially on vehicles past 80,000–120,000 kilometres or around the 7–10‑year mark. A mechanic will look for collapsed rubber, cracking, oil swelling (if a rocker cover or power steering leak has soaked the mount), or excessive engine movement when blipping the throttle.

• Common signs the mounts are tired:
  • More vibration at idle, often felt through the steering or seats
  • Clunk or thud on take‑off, gear changes or over bumps
  • Visible engine rock with the bonnet up
  • Knocking exhaust or stretched hoses from extra movement

Replacement is straightforward workshop work: support the engine from below, remove the mount fasteners, swap in quality OEM‑spec mounts, then torque everything to the Subaru spec from the service manual. It’s good practice to check the transmission mount and, where fitted, the pitch control mount at the same time. Many techs prefer to replace mounts in pairs to keep balance and NVH consistent. After fitment, a quick road test and re‑check of fasteners once everything’s heat‑cycled is a tidy way to finish.

Owners who keep up with regular servicing and get mounts inspected when new vibrations appear usually avoid secondary issues like cracked exhaust flex joints or stressed CVs. It’s a small part that keeps the Impreza feeling tight, quiet and properly Subaru.

Popular questions about 2018 Subaru Impreza engine mounts

How long do engine mounts last on a 2018 Subaru Impreza?

In typical Aussie and Kiwi conditions, many last 100,000–160,000 kilometres, but life varies with driving style, heat, and fluid leaks. City stop‑start and lots of hill‑starts can shorten their lifespan. Regular checks during major services help catch wear early.

Is it safe to keep driving with a worn engine mount?

Short trips are usually possible, but it’s not ideal. Excess movement can stress the exhaust, shifter linkages and CV joints, and the extra vibration gets old fast. It’s best to book the repair sooner rather than later to avoid knock‑on costs.

What’s the best replacement—OEM or aftermarket?

OEM or OEM‑equivalent hydraulic/rubber mounts match Subaru’s NVH tuning for the FB20 boxer. Aftermarket “stiffer” options can sharpen throttle feel but may add cabin buzz. For daily driving, most owners prefer genuine‑spec mounts for comfort and longevity.