A 1,500 HP turbo five-rotory engine powers this Le Mans-style Mazzei Formula 5 proptotype, and sounds like a Formula 1 V10.

Sauber team principal Jonathan Wheatley has confirmed Audi are on schedule with the development of their powerunit that is set to debut in 2026.

Toto Wolff appraises Red Bull's huge challenge of building its own in-house power units for next year's regulations ...