热车有好处

Transmission fluid performance: CVTs rely heavily on transmission fluid for both lubrication and hydraulic pressure. When the fluid is cold, it's more viscous (thicker), which can affect how the transmission operates — e.g., causing sluggish acceleration or unusual shifting behavior.

Material expansion and tolerances: Like all mechanical systems, the components inside a CVT (belts, pulleys, valves, etc.) are designed to operate within certain temperature ranges. Letting the vehicle idle briefly (30–60 seconds) allows these components to begin reaching optimal operating temperature.

Preventing long-term wear: Driving hard before the CVT has reached its operating temperature can increase wear over time, especially in extreme climates.