Porsche has revealed its second generation Panamera. The luxury four-door Gran Tourer has a more sporty appearance which includes a new, lower sloping roof line - inspired by the Porsche 911. On the inside, a tablet style interactive control replaces traditional hard keys while four individual sports seats are wrapped in fine leather. Introducing a new diesel engine to the range, there’s still room for a 550 bhp V8 petrol unit, which can propel the Panamera Turbo to 62 in 3.6 seconds and on to a top speed of 190 mph.