24/06/2008 01:58. This is the new, more powerful Maserati Quattroporte.

The biggest changes are under the bonnet, where the 4.7-litre V8 from the Alfa 8C and GranTurismo S has been installed. Named the Quattroporte S, the new range-topping model gets 424bhp, nine horses less than its coupe sibling. It will sit in the range alongside the standard 394bhp, 4.2-litre Quattroporte.

Both models will utilise the ZF six-speed automatic transmission that was first introduced into the Quattroporte in December 2006.

Subtle styling changes include a new... // Autocar