Having updated nearly all of its crossovers and SUVs in the last couple of years, BMW is getting ready to do the same with the hugely popular X3. Codenamed G45, the fourth iteration of Bavaria's Mercedes GLC competitor has been spied resting on a trailer between two test session. It's not just any X3 but the M Performance version judging by its quad exhaust system. Yes, BMW is putting four tips on M Lite models, starting with the X1 M35i.
