How long does automatic transmission last?

The lifespan of an automatic transmission typically ranges from 10 to 20 years or 150,000 to 300,000 kilometres, depending on the transmission type, driving habits, and maintenance conditions. Hydraulic automatic transmissions (AT) feature a stable structure, are suitable for complex road conditions, and generally have a design life exceeding 10 years. Continuously variable transmissions (CVT) employ steel belt drive and can last 200,000 to 300,000 kilometres or 15 to 20 years with proper maintenance. Dual-clutch transmissions (DCT) have a design life of approximately 10+ years and can reach up to 20 years under normal usage. It's recommended to replace the transmission fluid every 40,000-60,000 kilometres or biennially to prevent lubrication failure due to fluid degradation. Additionally, routine checks of transmission fluid level and quality, along with timely addressing abnormal symptoms like unusual noises or rough shifting, can prevent internal component wear. While there's minimal difference in transmission longevity between luxury and standard vehicles, strict adherence to maintenance schedules and adopting smooth driving practices will optimize their service life.