Quote:
Originally Posted by John_01
BMW cars have water pumps made completely of plastic and powered by electric motor. They will fail within 100,000km of use and leave the driver totally stranded.
If you ask me, the cars should all be recalled and fitted with better quality metal-bladed water pumps all-metal radiators as well.
There are probably other examples but that I think the water pump is the most shameful one because it is really fundamental to the cars reliability.
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AFAIK the wp has a 60k miles service interval... and if by plastic you mean composite then yes, there is quite a few composites that are stronger then steel and introducing steel in an all aluminum cooling system will promote corrosion.