a BMW-powered race car was allegedly capable of close to 1,300 hp, while three years later, that figure rose to 1,350 hp. To this day, the M12/13 remains the most powerful Formula 1 engine ever ...

That would be the first of six F2 championships won by M12/7-powered racecars from 1973 to 1984. During the late 1970s, BMW was also competing ... the most powerful F1 engine of all time, but ...

The company's most powerful engines cover ... M12/13 inline-four cylinder. One of BMW's most powerful engines, the 618-horsepower S70/2 V12, wasn't even used in a BMW but in the 1992 McLaren F1 ...