The whole ad-blue exhaust system is ridiculous in design. Though once the cars are older I am sure things will be available (or can be made) to make it think it has the systems in place and eliminate most/if not all of it from the vehicle.

How does having to purchase several gallons of chemical in big plastic bottles that need to be discarded every 10k help the environment vs having ever so slightly higher exhaust emissions? Its just like having a hybrid with a huge environment destroying battery and gobs of electronics, your just relocating the pollution.

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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)