When did Subaru go from timing belt to chain?
Subaru, the renowned Japanese automaker, has gradually transitioned its engine designs from using timing belts to timing chains over the past few decades. This shift has had significant implications for the maintenance and reliability of Subaru vehicles.
The Timing Belt Era
Historically, Subaru engines were equipped with timing belts, which are responsible for synchronizing the opening and closing of the engine's valves. Timing belts require periodic replacement, typically every 60,000 to 100,000 miles, to prevent potential engine damage. This maintenance task can be both time-consuming and costly for Subaru owners.
The Shift to Timing Chains
In recent years, Subaru has been phasing out the use of timing belts in favor of timing chains. Timing chains are designed to last the lifetime of the engine, eliminating the need for regular replacement. This transition has provided several benefits for Subaru owners:
- Improved Reliability: Timing chains are generally more durable and less prone to failure than timing belts, reducing the risk of unexpected engine issues.
- Reduced Maintenance Costs: With no need for periodic timing belt replacement, Subaru owners can save on maintenance expenses over the life of their vehicles.
- Increased Convenience: The elimination of timing belt replacement intervals means Subaru owners can enjoy their vehicles without the hassle of this routine maintenance task.
The transition to timing chains has been a gradual process for Subaru, with the company implementing the change across its model lineup over time. As of 2025, the majority of Subaru's current engine designs now feature timing chains, though some older models may still use timing belts.
Identifying Subaru Models with Timing Chains
To determine if a specific Subaru model uses a timing chain or timing belt, it's best to consult the vehicle's owner's manual or speak with a Subaru dealer. In general, newer Subaru models, such as the Outback, Ascent, and Impreza, are more likely to feature timing chain designs, while some older models may still use timing belts.
Subaru's transition from timing belts to timing chains has been a significant step forward in improving the long-term reliability and ownership experience of its vehicles. As the company continues to refine its engine designs, Subaru owners can look forward to even greater peace of mind and reduced maintenance costs in the years to come.
