Why does the Subaru 5AT transmission fail?

[McJoy]

There are three main reasons for Subaru 5AT transmission failures. Aging or damaged oil seals: Transmission oil leakage issues are primarily found in half-shaft leaks, front oil seal leaks, and front differential leaks. Chain and pressure cylinder wear: CVT transmissions are prone to chain and pressure cylinder failures after the vehicle has traveled a certain mileage. Subaru Forester transmissions may exhibit abnormal noises, slipping, shaking, slow acceleration, and even severe consequences like inability to move. Clutch failure: Clutch wear occurs under normal operating conditions. However, when the transmission experiences high internal temperatures, the clutch plates inside the clutch can overheat and burn out, leading to issues such as slipping, shaking, gear disengagement, and failure to accelerate when pressing the accelerator.