I will say that other than the DPF issue (which I blame on the previous owners for probably causing it) on mine, it has been flawless otherwise, no other errors or problems in ~12k miles of driving. Everything works, its smooth, quiet, and efficient. Covered over 85 miles today averaging 31.8mpg with the A/C blasting, charging my laptop in back with the built in A/C outlet, and cruising along most of time around 80-85mph.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)