In today’s automotive industry where simulation and virtual prototyping are increasingly used to reduce time to market, the design process has changed considerably since Taguchi invented the quality planning concept [1]. He found that it is often more costly to control the causes of manufacturing variation than making a process insensitive to these variations. By using simple experimental designs and loss functions, he often succeeded in greatly improving product performance by “building in” quality, in other words, implementing the quality-by-design idea.