A Closer Look At BMW's 2019 M4 DTM Engine – 2.0-Litre Four-Cylinder, 600 Bhp Auto News Arvind | April 29, 2019 Despite the 50 years that lie between them, these two BMW race engines – the M121 (from the 2002 Ti race car) and P48 (that powers the 2019 M4 DTM) – ...