Quote:
Originally Posted by fastboatster
N54 was also BMW's first production turbocharged engine in decades. They had an n55 which was reasonably reliable and b58 looks like it has many kinks on the n55 worked out. It has a mechanical water pump now, for example.
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I'll second that, the N54 block was unparalleled in its strength and strong forged internals hence why it won awards. Many run the N54 to 200,000+ miles and get the same performance out of without degradation.
Just like any BMW, what becomes the maintenance nightmare is all the components around the block that would fail - the electric water pump, the HPFP, the gaskets, the brittle plastics etc.