603-HP 2018 Mercedes-AMG E63 S Sedan Tested! ... This remains a performance sedan as good at everyday speeds as it is at stratospheric velocities, handling the real world with very nearly the same level of refinement as its less powerful siblings, thanks to the transformative effect of its switchable dynamic modes  The Mercedes AMG E63 S is a very reliable sedan that can offer you endless peace of mind and tremendous performance at the same time. Even though the resale value is a disappointment, we certainly do not have any complaints about the car as a whole.Both the cosmetic trim and the high performance engines are borne from the rich racing heritage of Mercedes-Benz. The letters “AMG” stand for Aufrecht, Melcher and Großaspach. ... Mercedes-Benz engineers Hans Werner Aufrecht and Erhard Melcher, began AMG as a racing engine forge in Germany in 1967.

AMG engines are reliable but mostly AMG cars are driven my braindead idiots which don't warm up the engine before pushing the throttle. AMG stands for reliable and well engineered engines but I read they can have problems with electrics and engine components