The 4-series Gran Coupe looks extremely boring compared to what the Arteon looks like. An insignificant difference in power like that really doesn't mean much to me anymore considering the tuning capabilities we have these days. I can easily see a tuner being able to bump that 276hp from the Arteon to hovering above and around the 300hp range. Any further modifications I think will be unnecessary as that's a nice round number to play with.