Unless you’ve been living under a rock for the past year, you’d know that Mercedes-AMG has introduced a new twin-turbocharged 4.0-liter V-8 engine that replaces its previous 6.2- and 5.5-liter mills. Code-named the M178, the engine delivers a maximum 503 horsepower at present, though we’re likely to see that figure dialed up considerably in the coming years.

ALSO SEE: Mercedes-AMG’s Next Four-Cylinder To Be Developed By F1 Team

So, what does it take to craft such an engine? This video outlines the rigorous testing that goes into every Mercedes-AMG engine and gives us a behind-the-scenes look at the tuner’s Affalterbach headquarters in Germany.

Some of the cars that feature the engine include the GT and C63 from Mercedes-AMG as well as the G550 from Mercedes-Benz. For an in-depth look at the engine's inner workings, read our previous report.

MUST SEE: Cramming A $4.5M Lamborghini Veneno Into A Transport Truck: Video


See more videos on our YouTube sites: The Car Connection, Motor Authority, and Green Car Reports.