Two things leapt out at me from the Mercedes-Benz pre-Paris motor show party and neither of them had anything to do with the mildly tweaked B-class on show there.

Instead both concerned the new 4-litre V8 engine powering both the Mercedes-AMG GT coupé and the C63 saloon and estate, both of which were being seen at a show event for the first time.

First is Mercedes’s assertion that its new twin-turbo V8 is actually more economical than a rival’s twin-turbo six-cylinder motor, and you don’t need to look any further down the road than to BMW in Munich to know which one is being talked about.

So the Mercedes engine has far more power – 503bhp in ‘S’ guise compared to 431bhp for the BMW M4 and M3 – yet it uses less or at the very least no more fuel.

In that instant everything I thought about downsizing to smaller engines with fewer cylinders went up in smoke. Both engines are new and twin turbocharged, but one has 4-litres and eight cylinders, the other 3-litres and six cylinders. 

To all the doomsayers who claim the days of large capacity, multi-cylinder engines are over, Mercedes for one appears not to have heard.