Horsepower vs kW
Units for the same thing: a car's power output. Spec sheets show kW, horsepower or metric horsepower (PS), and the last two differ slightly.
Horsepower and kilowatts measure exactly the same quantity, the rate at which an engine or motor can do work, in different units, much as miles and kilometers both measure distance. A car does not have "horsepower and power"; it has one output, quotable either way.
The complication is that horsepower comes in flavors. NIST lists about 745.7 W for the mechanical horsepower (550 ft·lbf/s) and about 735.5 W for the metric horsepower (PS), a difference of about 1.4%. Spec sheets do not always say which they mean, so rounded figures can drift apart across sources. Kilowatts have no such ambiguity, which is why CarPairly stores kW for every car, gas or electric, displaying the familiar unit per market.
When comparing, check that both figures describe the same thing, for example the engine alone or the combined system output of a hybrid, and whether a figure is a peak or a level the car can sustain.
Differs by market
Spec sheets quote power in kW, in horsepower (hp or bhp) or in metric horsepower (PS), depending on the publisher and market. CarPairly stores power in kW and shows the market-appropriate unit.