Mark Webber asked the DriveTribe community to offer up their tips for his extraordinary road trip in a new Porsche Carrera 4 GTS, taking him from the UK to the Porsche headquarters in Stuttgart. Consumption data: 911 Carrera 4 GTS: Fuel consumption combined 9.5 – 8.5 l/100 km; CO2-emissions 216 – 192 g/km
