Mercedes-Benz is very jealous of Porsche's Panamera. So much that their performance arm - Mercedes-AMG - wants a competitor of their own.
German publication AutoBild reports that Mercedes-AMG is beginning to work on sedan - possibly named GT4. The sedan will be based on the next-generation CLS-Class and will be designed with the shape of the AMG GT coupe. Power will come from a twin-turbo V8 with 500 horsepower for the standard model and 600 horsepower the S model.
AutoBild says we could possibly this sedan in 2019, a year after the next-generation CLS goes on sale.