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Originally Posted by Drjsuh
Very informative. I had heard of similar issues with audi direct injection cars. Does anyone know if the diesel bmw's have the same issues since they are direct injection too?
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They have the same issues (check the E90POST\M47 M57 diesel forum); however the root cause is considerably different - on diesels the cause is EGR. The solution is also different due to the different head and intake design
It's hard to say how many diesel owners are having problems, as BMW doesn't say and these forums are not representative at all. Also, many people aren't having problems (like me) apparently due to driving regimes. The X5d's don't seem to be having as many problems, possibly due to higher engine loads (heavier, bigger car) and the presence of the low-pressure EGR in addition to high pressure.