PS (pferdestärke) is the German word for metric horsepower. As a result, an engine's PS figure will be exactly the same as its metric horsepower (hp) number. The literal translation is 'horse strength'.
Related glossary terms
BHP - brake horsepowerBHP (brake horsepower) is a measure of an engine's power. HorsepowerHorsepower is a measure of how much power an engine makes, sometimes used interchangeably with brake horsepower (BHP) MPH - miles per hourMPH (miles per hour) is a measure of speed. For example, a car driving at 70mph on the motorway will travel 70 miles in one hour. 
