I got deflated when I realised the efficient N53 is only for regions with low-sulphur fuel.
What is the fuel economy of N52K? All my sources only show N53 (not N52K).
Bummer. I was looking forward to replacing my E90 320i with a bigger AND faster AND more economical E60 530i.
Oh well, I'll probably still do it! It's only 15-20% more thirsty by my estimation.
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