The whistle began 50 years ago, a high pitch emanating from the engine bay as the crank spun past 2500 rpm. It filtered through the cabin, growing louder, more frantic beyond 3000 rpm, and by then the sound was accompanied by a potency never before found in a 2.0-liter, four-cylinder motor. From 4000 rpm, the rush toward the horizon was, frankly, shocking. The BMW turbocharger had arrived, and with it came a whole new suite of driving sensations.
James Mills is a news reporter for Hagerty UK and Hagerty, specializing in automotive journalism. With a passion for classic cars and motorsports, James writes articles that cover a range of topics, including car reviews, buying guides, and stories about the history and culture of iconic automobiles.