The data indicates that all vehicles of the specified BMW 1 Series 5-door Sports Hatch (2015-18) 120D model are equipped with a 2.0-liter diesel engine. Notably, there is a 100% consistency in engine capacity at 1995 cc and primary fuel type as diesel across the sample. This suggests a uniform engine specification for this model variant, reflecting standard manufacturing configurations without variation in engine size or fuel type.