Infiniti has unveiled the latest addition to its G Saloon line-up in the UK, the G37x S.

Priced from £38,979, it is the first time Infiniti’s sportiest S grade has been available with all-wheel drive (AWD) in the G range. Previously only the GT was available with AWD.

Like all G models, the G37x S is powered by a 316bhp 3.7-litre V6 mated to a seven-speed automatic transmission with paddle shifts. A combination that delivers 0-62mph acceleration in 6.0 seconds.

The car has a top speed of 149mph and an official combined fuel consumption of 25.7mpg, with CO2 emissions of 255g/km.

The sole AWD model in the G line-up for 2012, the G37x S is distinguished by S hallmarks such as red S badges, 18-inch Sport design alloy wheels and smoked lens headlights.

Inside, key features include sports seats, with 14-way electric adjustment for the driver, aluminium pedals, a 10-speaker Bose sound system, a reversing camera and a high resolution touch screen.