Hello Petrolheads! Today I bring you a short test of the latest Mercedes-Benz C  180 d, aka Diesel or BlueTec or CDI. I decided that, despite only having driven the car for 3 days and around 500km, it was worth to write about it; plenty has been said and written about the fact that Mercedes-Benz now uses Renault engines – mostly regarding A-Class’ 1.5 – but regularly the reviews tend to show a very personal perspective, which I believe doesn’t help many real customers, who don’t care from which manufacturer the engine comes from. This review is focused on the engine dynamics, as most of the drive was done on the motorway. The tested car comes with Renault’s 1.6 diesel, downgraded to a modest 116PS/ 85kW and 280Nm. On a cold start, it rattles as loudly as Merc’s own 2.1L, albeit the note being slightly higher pitched. Once warm it improves and becomes reasonably refined, but a hum is always in the background. The tested car was equipped with plenty of opti...