All MY2000 E39 M5s exhibit a characteristic VANOS rattle on cold start that BMW addressed with an oil pressure accumulator retrofit on 2001-2003 models; repair kits exist for ~$1-2k.
VANOS rattle and MY2000 cold-start noise
BMW E39 M5 · mechanical
All MY2000 E39 M5s exhibit a characteristic VANOS rattle on cold start that BMW addressed with an oil pressure accumulator retrofit on 2001-2003 models; repair kits exist for ~$1-2k.