Engine Noises in Mercedes-Benz E-Class W212: Diagnosing and Fixing Abnormal Sounds (Case Study – M271 Engine) Unusual engine noises are among the most common and most concerning complaints Mercedes owners experience. Whether it’s ticking, knocking, grinding, or tapping, any abnormal ...
Quick Summary The Mercedes M271 is a 1.6L and 1.8L inline-4 petrol engine (2002–2015), fitted across the C-Class W203/W204, E-Class W211/W212, SLK R171/R172 and CLK W209. Early units used a supercharger (Kompressor); the later M271 EVO switched to a turbocharger ...