Although the 135i now has BMW’s N55 single-turbo inline six-cylinder engine, the 1-series M uses the N54 twin-turbo unit that’s also fitted in the Z4 sDrive35is and the 335is.

Read our full 2011 BMW 1-Series review for pros, cons, pricing, and expert insights. Our editors test drive over 200 vehicles a year to help car shoppers pick the right vehicle for them.

BMW of North America, LLC (BMW) is recalling certain 2010-2012 1 Series Coupe, 1 Series Convertible, 3 Series Sedan, ... Dealers will update the software for the Electronic Control Unit (ECU), ...