Hybrid kWh per 100km

Hybrid Vehicle Energy Consumption (kWh/100km)

A plug-in hybrid (PHEV) or a full hybrid (HEV) pairs a combustion engine with an electric motor and a battery. When you want to gauge the electric side of a trip on its own, the formula is kWh/100km = (kWh used ÷ km in EV mode) × 100 — the same European fuel-economy notation, just applied to electricity instead.

Take a Toyota Prius HEV: it averages 4–5 L/100km of gasoline equivalent, since the battery is tiny and only tops up through regenerative braking. A PHEV like the BYD Song DM-i is a different animal, running about 1.5 L plus 20 kWh/100km in mixed mode and 16–20 kWh/100km in pure-EV mode over the first 80–100 km on a full charge. Against a straight ICE in the same class, CO₂ emissions come down 40–60%.

Applications

Use it to weigh a PHEV's electric efficiency against pure EVs like a Tesla or a BYD Dolphin, to estimate home charging cost per 100 km, or to check whether your daily commute fits inside the EV-only range. It also helps forecast how the monthly bill splits between electricity and gasoline. Fleet managers lean on the same number to compare drivers and routes.

FAQ

Why is PHEV consumption higher than a pure EV? A PHEV is hauling around a combustion engine, a fuel tank and a dual drivetrain, and all that extra weight costs it 15–25% in electric efficiency.

Does regenerative braking count as “kWh used”? No. Take out whatever energy you recovered and enter only the net amount actually drawn from the battery.

How does climate affect the number? Cold weather below 10°C, along with heavy AC use, can push kWh/100km up by 20–30%. Your best case is flat city traffic where regen does most of the work.