Parts for your 2015 Subaru Forester-Engine mount

2015 Subaru Forester engine mount — what it does and when to replace it

Yes, the 2015 Subaru Forester is fitted with engine mounts. This is confirmed by Subaru’s factory Service Manual for the 2015MY Forester (SJ) under the Engine Mounting section, and by Subaru’s electronic parts catalogues that list left- and right-hand engine mounts and a transmission mount for FB25 (2.5i) and FA20F (XT) variants. Workshop procedures in Subaru’s technical information system also outline mount inspection and replacement, making it clear the part is relevant to this model.

The engine mount’s job is simple but critical: it holds the Forester’s BOXER engine in place while soaking up the vibrations and torque reactions that happen every time the driver starts, idles, accelerates or shifts. By isolating harshness, the mounts keep the cabin calm, maintain driveline alignment, and protect surrounding components like exhausts, hoses and wiring from undue stress. Depending on variant, the Forester uses robust rubber or fluid-filled mounts to balance comfort with control, which suits Aussie and Kiwi roads nicely.

Engine mounts aren’t a “replace on a schedule” item, but they do age. Heat, oil contamination and repeated load cycles eventually harden rubber or cause fluid-filled mounts to seep. During regular servicing, a good workshop will check for sagging, cracks in the rubber, split bonding, or fluid leaks, and will note any excess engine movement when shifting from Drive to Reverse. Tell-tale signs a Forester’s mount is tired include:

• Vibration through the steering wheel or seats at idle
• Clunks or thuds on take-off or lift-off
• Noticeable engine rock under the bonnet when toggling between R and D

If replacement’s on the cards, it’s smart to use quality OEM-equivalent mounts and to replace mounts in pairs when practical, especially on higher‑kilometre cars. On the Forester’s horizontally opposed engine, access is from underneath, the engine needs safe support before unbolting anything. It’s also wise to check the transmission mount at the same time, as a weak trans mount can mimic similar symptoms.

After fitting, fasteners should be torqued to spec with the engine settled at normal ride height, and the workshop should recheck clearances for exhausts and hoses. There’s no day-to-day maintenance beyond periodic inspection, but keeping oil leaks in check will greatly prolong mount life. For turbo XT owners or vehicles that regularly tow or tackle corrugations, earlier replacement may be worthwhile to keep the driveline tight and the ride civilised.

Popular questions about 2015 Subaru Forester engine mounts

How long do engine mounts typically last on a 2015 Forester?
Many owners see 120,000–200,000 km from factory mounts, though life varies with heat, driving style, towing and road conditions. City driving with lots of stop‑start or a small oil leak can shorten that window, while highway kilometres and clean, dry mounts can stretch it.

Is it safe to drive with a worn engine mount?
Short, gentle trips might be manageable, but it’s not ideal. A failed mount can increase vibration, stress the exhaust and hoses, and cause clunks that feel nasty. If there’s heavy engine movement or a fluid-filled mount has leaked, book it in and avoid hard acceleration until it’s sorted.

How can I tell if vibration is a mount or an engine misfire?
Mount vibration is usually worst in gear at idle and improves with revs, misfires tend to be felt across the rev range and may trigger a check‑engine light. A technician will scan for misfire codes, do a quick power‑brake test to watch engine movement, and inspect mounts for cracks or leaks.