If we do the math of Lexus versus MB faults, Lexus wins hands down barring exceptions like the one mentioned. If consistency of quality is anything to go by Lexus scores handsomely in that respect.

__________________
99 Gurkha with OM616 IDI turbo

2015 Gurkha with OM616 DI turbo

2014 Rexton W with OM612 VGT