[Updated] It's finally here; BMW has unveiled its long-rumored four-cylinder turbocharged gasoline engine which makes its world premiere on the X1 xDrive28. The four-banger essentially replaces the firm's classic naturally aspirated 3.0-liter straight-six and will soon find its way in a variety of models. Even though the Bavarian automaker is keeping its cards close to its chest, expect to see the new unit, codenamed N20, on the 1-Series, X3, 3-Series, Z4 roadster and 5-Series models.
The first four-cylinder petrol engine to employ BMW's TwinPower Turbo technology is closely modeled after the Bavarian firm's force-fed in-line six-cylinder units and features an all-aluminium crankcase, twin-scroll turbocharging system, direct injection, plus the latest version of the company's patented VALVETRONIC variable valve control system.
