呢部奧迪 A7 Sportback quattro 用嘅係電油加 48V 輕混系統，唔使插電充電；系統主要靠能量回收，再喺起步或加速時輔助引擎，並唔係用嚟長時間純電行駛。插電混能就有較大嘅動力電池，可以用充電樁或家用電源充電，一般亦可以純電行駛一段路。簡單講，48V 輕混重點係輔助電油引擎，插電混能就更接近「電車加引擎」嘅使用方式，但要經常充電先發揮到優勢。
This Audi A7 Sportback quattro uses a petrol engine with a 48V mild-hybrid system. It recovers energy and assists the engine, but it is not designed for regular electric-only driving and does not need external charging. A plug-in hybrid has a larger traction battery that can be charged from a socket or charger and can usually cover part of a journey on electric power alone. In short, the 48V system mainly improves engine efficiency and smoothness, while a plug-in hybrid offers meaningful EV driving but needs charging to make full use of it.
