Back in 2013, Aston Martin signed a deal with Daimler to supply the next generation of its performance vehicles with Mercedes-AMG engines and electrical systems. That arrangement is now coming to an end, as AMG has decided to replace its 4.0-liter V8 with a hybridized four-cylinder unit that’s more efficient. While the older Mercedes-sourced mill will linger in Aston Martin’s Vantage, DB11, and DBX luxury crossover, the manufacturer will eventually need to find its replacement.

Fortunately, it already has a motor in mind.