MrElussive said:
As I said before, most engines are ready to go right from the start. VW/Audi engines, you can pretty much push them as much as you want during their break-in period. This applies to Mercedes, as well. As for the Mercedes AMG cars, there is no break-in period for the engine...you can just push it as hard as you want...they break it in for you. At the AMG factory, where they hand-build the engines, once each engine is completed, they run the engine all the way to redline and make sure it puts out the rated horsepower (meaning the engine is running properly). After that, they spin the engine at different rpm's to break it in for you. This way, when you take delivery of your brand-new AMG car, you can just drive it how you want and the engine is already perfectly broken-in for you (which is also for the sake of the life of the car).