How long do engine mounts last on a Subaru?
Most Subaru engine mounts typically last about 60,000 to 100,000 miles (roughly 95,000 to 160,000 kilometers) under normal driving conditions, but exact longevity varies by model, mount location, and how the car is driven.
Lifespan expectations by mount type
The following ranges reflect common experience across many Subaru models. Individual results can vary based on engine type, mounting design, and handling of the vehicle.
- Front engine mount: 60,000–100,000 miles
- Rear engine/transmission mount: 70,000–110,000 miles
- Side engine mounts: 60,000–100,000 miles
In practice, some mounts may outlast others, and environmental factors or harsh driving can shorten these estimates. If oil leaks contaminate a mount or the engine experiences excessive vibration, life can be significantly reduced.
Factors that shorten or extend mount life
Several conditions influence how long Subaru engine mounts hold up. The following factors commonly affect wear and tear across models and driving styles.
- Driving style: aggressive acceleration, hard cornering, and towing add torque that stresses mounts.
- Oil leaks or contamination: oil-soaked rubber deteriorates faster.
- Climate and road conditions: extreme temperatures, frost heave, and rough roads accelerate wear.
- Engine type and torque: turbocharged or high-torque engines can place more stress on mounts.
- Maintenance and wear patterns: neglected cooling, misalignment, or previous improper repairs can lead to uneven loading.
Overall, normal driving with periodic maintenance tends to keep mounts within the typical mileage ranges, but abuse, leaks, or aggressive use can shorten their lifespan.
Recognizing wear and planning replacement
Engine mounts fail in ways that motorists can notice. Early detection helps avoid further damage to the drivetrain and exhaust, and can keep vibrations from becoming intolerable.
- Excessive engine movement: a noticeable lurch or rocking when shifting from Park to Drive or when accelerating hard.
- Vibration in the cabin: increased engine vibration at idle or under load, often more pronounced in older Subarus.
- Clunking or banging sounds: a knocking noise when starting, stopping, or going over bumps.
- Visible cracks or oil contamination: cracked rubber or mounts stained by oil or coolant leaks.
- Misalignment symptoms: exhaust or coolant lines appearing slightly out of position or rubbing due to mount failure.
If you notice these signs, it’s wise to have the mounts inspected by a qualified technician who can determine whether one or more mounts are failing and whether replacement is needed.
Inspection and diagnostic tips
Technicians typically check all mounts while the vehicle is on a lift, looking for cracked rubber, torn bushings, or oil-soaked components. A technician may also perform a load test to observe engine movement under acceleration and deceleration.
Routine checks during major service intervals can help catch issues early and prevent additional drivetrain wear.
Replacement is often done in sets to maintain balanced support and smooth operation, especially on newer Subarus with multiple mounts sharing loads.
- Typical parts cost per mount: broad range, often between $50 and $250 depending on material (rubber, hydraulic, or performance variants) and OEM vs aftermarket quality.
- Labor: depending on model and access, roughly 1–4 hours per mount; some jobs may take longer on models with limited engine bay access.
- All‑mount replacements: replacing more than one mount at once is common and can save labor in the long run.
Overall, most Subaru engine mount jobs fall into a broad price range that varies by model, mount type, and local labor rates. Plan for a few hundred dollars per mount in typical repair scenarios, with higher totals for hydraulic or performance variants and for multiple mounts replaced at once.
Summary
In short, Subaru engine mounts generally last around 60,000 to 100,000 miles under normal use, but many factors—driving style, leaks, climate, and engine torque—can shorten or extend that lifespan. Regular inspections, especially if you notice unusual vibrations or noises, help determine when replacement is needed. Replacement costs depend on mount type and labor, with aftermarket and hydraulic options affecting the price. When in doubt, consult a qualified technician to assess your specific model and driving conditions.
