The measure of the strength of an engine. Generally, the faster an engine
spins, the more power it develops.
Just as a racehorse or athlete achieves maximum performance when their legs are
running flat out, a car engine achieves its maximum power when it is spinning
at maximum revs.
However, torque (see separate listing) is also important for overall
performance. Power (see also ‘Horsepower’) is expressed in kiloWatts (kW).