This will be matched with a 3.0-litre turbocharged V6 diesel producing 187bhp. Quite what emission and consumption figures will be, we’ll have to wait to find out nearer the launch date of early next year. There are petrol engines, but not in the UK, although there will be a monster 5.5-litre V8 AMG version pumping out 577bhp (up 27bhp).