TESTER’S NOTE
The Mercedes-Benz S-Class has always been a repository for the firm’s latest powertrain, suspension and safety technology. On the face of it, that would seem to be the case with this box-fresh new W223-generation version, which has just arrived on UK roads. But chauffeurs be warned: this time around, only really well-heeled S-Class owners may get the benefit of everything the car can do.