(UK) Galaxy - buying secondhand?

I've decided to get a Mk2 Galaxy/Sharan/Alhambra. I'm aiming for a TDI 115bhp auto.
Are there anything to check or look for? Or are they pretty robust? I've
heard tales of leaks / ECU problems on the Mk1, but this seems to be cured on the Mk2; is this correct?
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