Horsepower (or bhp) is the measure used for most cars to tell how much oomph they have, but it isn't the only one that manufacturers use. Pferdestärke, or PS for short, and kilowatts (kW) are both ...

The brilliant McLaren 720S Graham recently drove gets its name because the 4.0-liter twin-turbocharged V8 mounted behind the seats makes 720 horsepower. Clever. And impressive, except that, when you ...