The amount of power or bhp that a BMW 1 Series Sport has depends on which model it is and which engine it has. The latest 2019-onwards 1 Series Sport offers a choice of a petrol engine with 134bhp or diesels with either 115bhp or 187bhp.
The previous model of 1 Series also comes with a choice of petrol or diesel engines. The petrol range gives you between 134bhp and 181bhp, while the diesel engines offer between 93bhp and 181bhp.