Infiniti GT-R saloon on way

Coupé will be joined by a four-door model

Nissan’s GT-R is growing, Auto Express can reveal. Sources in Japan have discovered that the hi-tech supercar will soon be available as a four-door – and it’s set to wear an Infiniti badge.

The flagship will rival the Porsche Panamera and BMW M5, and it uses the same four-wheel-drive chassis and twin-clutch gearbox as the GT-R coupé. However, it will have a longer wheelbase and place an emphasis on comfort and luxury rather than performance. Instead of the GT-R’s twin-turbo 3.8-litre V6, the saloon will have the same 5.0-litre V8 as the Infiniti FX50 SUV, tuned to give around 420bhp. That should still mean a 0-60mph time of five seconds and a top speed of 170mph. Expect the saloon to arrive in spring 2011.