Quote:
Originally Posted by Avaley
I think the engine improvements are being underrated by both BMW and the enthusiast community.
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Manufacturers cannot cheat on power ratings, it is governed by strict standards. However, modern turbocharged engine behave in a certain way that make them seem underrated relative to the testing standards. So comparing the official power ratings of previous NA engines with the modern turbo engine in not apples-to-apples. However, comparing the S55 to S58 is. The S58 will not seem any more underrated than the S55 was.