Heavenly pure sound from the Audi Quattro’s turbo inline 5 💆‍♂️ The Audi S1 Quattro is one of rally’s most iconic legends, representing the peak of the Group B era. Introduced in 1984, the S1 Quattro was Audi’s answer to the escalating competition, equipped with a 2.1L inline-5 turbocharged engine producing up to 591 horsepower in its most extreme form. Its cutting-edge quattro all-wheel drive system provided unmatched traction, helping the car dominate on all surfaces, from gravel to snow. Dri