Official Word:

The "S-Class of SUVs" meets AMG Performance Luxury: The new Mercedes-AMG GLS 63 is more dynamic and versatile than ever before. Imposing design, exclusive appointments, plenty of space for up to seven people and further improved driving dynamics make the GLS 63 unrivalled in the Luxury SUV segment. Superior driving performance is provided by the powerful 4.0-liter V8 biturbo engine with 603 hp and an integrated EQ Boost starter-generator. This ancillary unit powers the 48-volt electrical...Read.