Buying an A6 2.5 Tdi quattro

aeroelastic

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Hi all,

I need a bigger car (have a Bora at the moment) and I am going to look at an A6 2.5TDi Quattro (2001) in the next few days. Having owing a petrol, could I get any advice from you guys about checking a TDi?

What should I look for? What symptoms do failing Turbo have?

Anything else that I should pay attention to? How do I test if the Quattro system is working?

Thanks in advance.​