How long do Subaru belts last?
In brief: Most Subaru engines that use a timing belt should be scheduled for replacement around 105,000 miles (169,000 km) or about 7 years, whichever comes first. The serpentine (drive) belt that powers accessories typically lasts about 60,000 to 100,000 miles, with life varying by conditions. Exact intervals depend on the model, engine type, and how the vehicle is driven, so always check the owner's manual or with a Subaru technician for your specific car.
Subaru belts fall into two main categories: timing belts that synchronize camshafts with the crankshaft, and the serpentine drive belt that powers components such as the alternator, power steering pump, and air conditioning compressor. The lifespan of each belt is determined by engine design, maintenance history, and driving conditions. This article outlines typical lifespans, signs of wear, and how to verify the correct service intervals for your Subaru.
Timing belts in Subaru engines
Guidance on when to expect timing belts to be replaced and factors that influence their longevity.
- Typical replacement interval for Subaru engines that still use a timing belt: about 105,000 miles (169,000 km) or 7 years, whichever comes first.
- Some older or non-standard Subaru engines may have different intervals (for example, around 100,000 miles or 8 years). Always confirm with your owner's manual or dealership.
- If the belt fails or slips, substantial engine damage can occur, especially on interference engines. Regular inspection is essential.
These guidelines reflect common manufacturer recommendations and real‑world practice, but the exact interval depends on your specific engine family and model year. Following the official schedule helps prevent costly failures.
Serpentine belts and drive belts
Details on the belt that powers accessories and how its replacement timing differs from the timing belt.
- Serpentine/drive belts typically last about 60,000 to 100,000 miles, depending on belt material, heat exposure, and driving conditions.
- Look for signs of wear such as cracks, fraying, glazing, or squealing noises; these indicate it’s time to inspect or replace the belt.
- When replacing a serpentine belt, it is common to replace the tensioner and idler pulleys at the same time to prevent future failures.
- Oil leaks, misalignment, or severe heat can shorten belt life and warrant sooner replacement.
Serpentine belts wear differently from timing belts and are more susceptible to external factors like oil leaks and heat. Regular inspection during routine service helps avoid unexpected breakdowns.
What to check and how to verify for your model
Is your engine belt or chain?
Many Subaru engines have shifted to timing chains in newer generations, which do not have a scheduled replacement like belts. To know for sure, check your owner's manual or contact a Subaru‑certified shop. Chains generally last longer but still require inspection if you hear noise or notice performance issues.
How to confirm the maintenance interval for your engine
Refer to the official maintenance schedule for your specific model and year in the owner’s manual or Subaru’s official site. If in doubt, ask a dealer or a trusted mechanic to confirm whether your vehicle uses a timing belt, timing chain, and the recommended replacement or inspection intervals.
Summary
Bottom line: For most Subaru models with timing belts, plan for replacement around 105,000 miles or about 7 years. Serpentine belts generally endure 60,000 to 100,000 miles but will vary with use and conditions. Always verify your exact model’s interval in the owner’s manual, and consider replacing associated components (tensioners, idlers) when performing belt work. If your model uses a timing chain instead of a belt, consult the manual for its service guidelines, as chains have different maintenance expectations.
How long do Subaru serpentine belts last?
Most serpentine belts last for 50,000 miles or more. Consult your Subaru owner's manual for details on your specific vehicle. Symptoms that point to a failing serpentine belt generally appear as poor performance from accessories, rather than driving performance.
What year did Subaru quit using timing belts?
Timing belts needed to be replaced at about 100K intervals, but timing chains were considered life of the vehicle items. Both Outbacks and Foresters were switched to timing chains for 2013 model year.
Do subarus have timing belt issues?
Just like rubber accessory belts under the hood, the timing belt may stretch and crack over time. And since modern Subaru engines are interference engines, that means that a broken timing belt could cause severe damage to the engine! That's why it's crucial to get the timing belt on your Subaru changed before it fails.
How often should a Subaru timing belt be changed?
The Subaru timing belt interval is generally 105,000 miles or seven years, whichever comes first, although some older models or specific conditions may have different recommendations. It is crucial to follow the recommended replacement schedule to avoid catastrophic engine damage, which can occur if the belt breaks. Some mechanics recommend a more frequent interval, such as every 60,000 miles, especially with aftermarket parts or in harsh driving conditions.
This video explains the difference between timing belts and timing chains in Subaru engines: 51sMrSubaru1387YouTube · May 18, 2025
- Standard interval: Replace the timing belt at 105,000 miles or seven years, whichever occurs first.
- Older models: Vehicles prior to 1993 and 1993-1997 models (except in California) had a 60,000-mile interval.
- California models: 1993-1997 Subaru models in California had an inspection every 30,000 miles and a replacement at 105,000 miles.
- Model year 1999 and later: The interval is 105,000 miles or 105 months, with inspections recommended every 30,000 miles or 30 months.
- Harsh conditions: Consider replacing the belt sooner than the recommended interval if you frequently drive in extreme weather, make many short trips, or have high mileage.
- Risk of failure: A broken timing belt can cause severe and expensive engine damage, making it a critical maintenance item.
