Which statement about PHEVs and HEVs is true?

• A. PHEVs cannot be recharged
• B. HEVs have larger batteries than PHEVs
• C. PHEVs require plugging in to recharge
• D. HEVs are always fully electric

Answer: (C)

Plug-in capability is what sets PHEVs apart from conventional hybrids. PHEVs are designed to be charged from an external power source, and they carry a larger battery to support meaningful electric-only operation. Recharging that battery by plugging in is the defining feature, allowing you to drive on electricity for a portion of trips without using fuel.

HEVs, by contrast, do not plug in. Their battery is charged only by the gasoline engine and regenerative braking, and their electric range is limited. They are not fully electric; the gasoline engine often runs to assist propulsion or to restart the electric motor as needed.

So, the statement that PHEVs require plugging in to recharge is correct.