Question: What is the abbreviation of the engine used by the BWW B57?
Sentence (from "BMW B47"): Together with the B37 (three-cylinder diesel engine) and the B57 (inline six-cylinder diesel engine) and the three gasoline engines: B38 (three-cylinder), B48 (four-cylinder) and B58 (six-cylinder), the B47 is part of a family of modular engines from BMW introduced in 2013/2014.
Relevant evidence: No