The redesign will see them lose weight, add a diesel, and share more Audi A8 components under the skin.
Design Styling is once again directed by Dirk van Braeckel. Change is evolutionary, but the coefficient of drag is reduced. Switching from a Volkswagen Phaeton to an Audi A8 front axle allows for a shorter front overhang and results in a longer wheelbase for the coupe; the track is wider as well. The larger footprint yields a roomier rear seat and trunk.
Source: Automobile Mag