Volvo PHEV technology refers to the plug-in hybrid electric vehicle technology developed and implemented by Volvo Cars. A PHEV combines an electric motor and battery with a traditional petrol or diesel engine, allowing the vehicle to be driven using either or both power sources, depending on driving conditions and driver preferences.

In a Volvo PHEV, the electric motor is powered by a rechargeable battery, which can be charged by plugging the vehicle into an electrical outlet. When the battery is fully charged, the vehicle can operate in pure electric mode, using only the electric motor for propulsion. This provides the benefits of zero-emission driving and reduced fuel consumption, especially for short trips in urban areas.

When the battery charge is depleted, the petrol or diesel engine seamlessly takes over and provides power to the wheels, extending the vehicle's driving range. In some situations, such as high-speed driving or when extra power is needed, both the electric motor and the petrol or diesel engine work together to provide maximum performance.

Volvo PHEVs also feature regenerative braking, which recaptures energy that is normally lost during braking and uses it to recharge the battery. This helps to extend the driving range and improve overall efficiency.

Overall, Volvo PHEV technology provides a balance between the benefits of electric driving and the convenience and range of a traditional petrol or diesel vehicle, making it a popular choice for drivers who want to reduce their environmental impact without compromising on performance or flexibility.