But the calls from senior figures in the F1 paddock, including the FIA president, Mohammed Ben Sulayem, to consider returning the loud engines used most recently 20 years ago, has also raised ...

BMW's inline-six engines are loved among fans and have been around since the company's start, but only a select few can take the mantle as the most powerful.

With 16 cars and 12 motorcycles, all air-cooled, this simple means of internal combustion finds the spotlight.