From September 2018, all new cars registered in Europe, India, South Korea and Japan will have to report their official fuel economy and CO2 figures according to the WLTP - the Worldwide harmonised Light Vehicle Test Procedure. In Europe, this replaces the outdated NEDC test (New European Driving Cycle) introduced in the '80s and aims to better reflect the real-world consumption and emissions performance of new cars. Following the revelation that BMW has had to pause or cease manufacture of some models thanks to the upcoming WLTP introduction, we consider what implications the new procedure has for OEMs.