Launched at the Auto Expo 2018, the 6-series Gran Turismo is essentially a global replacement for the 5-series GT. It is based on the same platform as the 5-series saloon. This one will take on the Mercedes-Benz E-Class LWB, as the Bavarian automaker doesn���������t offer a 5 Series with long wheelbase. It is available in both petrol and diesel guise. So let���������s find out what our Ed. Ashish Masih has to say about the 6-GT.