We're watching everything that they're doing, and there are certain things in place [within the agreement] but not everything," Barritt said. We know that Aston Martin is targeting hybrid models in the future, and a new line of inline-six engines from Mercedes could be the perfect option. Rumors are currently circulating around an inline-six engine from Mercedes that could make its debut in an AMG version of the refreshed CLS Coupe. This model would be called the CLS 53 AMG, and come with a 3.0-liter inline-six engine making 429 hp. This power would then be supplemented with an electric motor for a total of 496 hp.