L2 isn't true autonomous driving — the driver can't take their hands off the wheel.
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culture
Refers to SAE J3016 driving-automation levels (L0–L5). In Chinese EV marketing 'L2' is the entry tier (lane-keep + adaptive cruise) and is now near-universal; brands like Xpeng, Huawei AITO, and NIO advertise 'L2+' or 'L2.9' as a hint at L3-like capability without the legal liability.
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Read aloud as 'L-èr' or sometimes the English 'L two'. Often combined into terms like L2级辅助驾驶 (Level-2 driver assistance) or L2+/L3/L4.