The new, 4-door Mercedes-AMG sports car will soon celebrate its world premiere at the Geneva International Motor Show. With the new model, the performance and sports car and brand in Affalterbach is adding a 4-Door Coupe to the AMG GT family. The new Mercedes-AMG model has been conceived as an upmarket replacement for today’s CLS 63 and a rival to the Porsche Panamera. Sales for the production model are scheduled to begin in September 2018. The car will be launched with the same 604bhp twin-turbocharged 4.0-litre petrol V8, nine-speed automatic gearbox and fully variable four-wheel drive system as the latest E63 S 4Matic, upon which it is largely based. However, Mercedes officials have said there are also concrete plans for it to be sold with hybrid drivelines from 2019 onwards - suggesting the spotted harder version could arrive as part of that line-up.