Hybrids and plug-in hybrids: What's the difference?

With the increased focus on sustainable mobility, over the years multiple engine options have emerged for cars – which no longer have just traditional combustion engines.

This is the case for hybrids and plug-in hybrids. This is a pertinent distinction to make within hybrid propulsion, as the operation is different. We explain.

Hybrids have automatic management, in which the electric motor (or electric motors, as there may be more than one) serve only as auxiliaries to the thermal engine – in situations such as starting, low speeds or braking. The battery is charged by part of the energy from the conventional engine, having a very limited duration.

Plug-in hybrids allow the driver to manage the vehicle, while the vehicle can do so autonomously. The batteries are larger and can be charged. With greater autonomy, the all-electric mode can even be used exclusively in situations such as city trips. However, it can also be used as an aid when starting off or at low speeds. Fuel savings are greater.

In both cases, the combination of the two types of engine can result in higher power levels than a conventional combustion car.