What should I be paying?
There are few options: mostly carbon this'n'that and the louder exhaust. There's not much you'd really miss in the standard kit list, but if you do miss it it's probably not available here, whereas a Mercedes-AMG would give you far more opportunities to have seconds and thirds at the options buffet table.
We ran one – an early one mind – as a long-term test car and things went wrong. But they've gone wrong in similar magnitude with BMW Ms and Audi RSs of our stewardship too.
You're looking at WLTP consumption of 27.2mpg and 236g/km CO2. Those are on the money with rivals. Warranty is three years, with extensions optional, and you can add service packs.