Hello in the round, I recently bought a 2015 Grand Scenic III 1.6 dci 130, 165 TK. First hand, checkbook maintained, had recently received new inspection + 4 new glow candles. The problem: the engine is weaker, thirstier, and DUTCH louder & rougher than normal or my 2 previous GS 1.6 dCi which I had before, although the older ones were (2013 +2015) & more Km (190 tkm + 220 tkm), car PC shows no interference. Does anyone know what could be the cause? The loud rough V the engine runs very disruptive, a grinding coffee machines similar noise scenery to tractor ((not as usual discreet smooth 1.6 dCi engine run((( Can someone please help me ? Thanks in advance Robert