The 2015 Subaru Legacy represents a significant moment for the model, marking a return to a more refined platform and modernized design. While generally regarded as a reliable and capable sedan, a closer look reveals that this specific model year is not without its share of mechanical and electrical gremlins. Potential buyers and current owners alike need to understand the specific 2015 Subaru Legacy problems to make informed decisions.
Recalls and Technical Service Bulletins
Before diving into the common malfunctions, it is essential to review the official recalls issued by Subaru for the 2015 model year. These recalls address critical safety issues that Subaru mandated dealers to fix free of charge. Checking the vehicle identification number (VIN) against Subaru's database is the only way to confirm if all rectifications were completed. Beyond recalls, numerous Technical Service Bulletins (TSBs) provide insight into patterns Subaru acknowledged but did not always address through a full recall.
Window Regulator and Electrical Gremlins
One of the most frequently reported 2015 Subaru Legacy problems involves the power windows. Owners often experience windows that operate slowly, get stuck halfway, or cease to function entirely. This issue is usually attributed to faulty window regulators or failing motors. Furthermore, the 2015 model year suffers from a higher incidence of general electrical gremlins compared to its predecessors. These can range from malfunctioning infotainment systems and erratic dashboard lights to issues with the key fob programming, often requiring multiple visits to the dealer for diagnosis.
Mechanical Undercarriage Concerns
Driving dynamics are a core part of the Legacy experience, but the 2015 model year introduced a specific weakness in the drivetrain. The timing chain tensioner and guide rails have been identified as problematic components. In some instances, these parts can fail prematurely, leading to a rattling noise from the engine bay. If left unaddressed, this can escalate into more severe engine timing issues, resulting in significant internal damage and costly repairs that often exceed the vehicle's value.
CVT Transmission Hesitation
The Subaru Legacy utilizes a continuously variable transmission (CVT) paired with the horizontally-opposed "Boxer" engine. While this combination offers smooth power delivery, some 2015 models exhibit transmission hesitation or a shuddering sensation during acceleration. Owners might notice a lack of responsiveness when pressing the throttle or a strange vibration that occurs at specific RPM ranges. This transmission behavior can be frustrating and is a common point of discussion among Legacy owners forums.
Exterior and Interior Wear
Beyond mechanical failures, the 2015 Legacy shows some signs of material quality that can affect longevity. The interior dashboard and console components are prone to developing a hazy or cracked finish due to heat and sun exposure over time. This cosmetic degradation is not just an eyesore but can indicate underlying plastic brittleness. On the exterior, some owners have reported issues with rust formation, particularly in regions that utilize road salt during the winter months, affecting wheel wells and undercarriage sections.
Infotainment and Sensor Issues
The multi-information display (MID) located in the gauge cluster is another culprit for frustration. Owners have complained about the screen freezing, losing its backlight, or simply failing to display data correctly. Additionally, the blind-spot monitoring system and rear cross-traffic alert, while valuable safety features, can sometimes produce false alerts or fail to detect objects, leading to deactivation of the system out of annoyance. These electronic faults highlight the complexity added by the model's technology.
