Audi A6 C6 3.0 TDI Le Man's Edition- Prospective Buyer.

I am currently in the market for a late Audi A6 C6 Le Edition. I have test driven a 2010 and this is my time driving a Audi ( currently driving a BMW).The car was very smooth, changed through the gears with no issues and the no noises from the suspension, as this is a big heavy car. 

Below is a list of things to look for and problems, I have found.

Air conditioning faults
Feel for water ingress in the boot (particularly behind left hand trim panel),Clonks over bumps/hard lock front ARB bushes

 There's a small weakness in the flap system within the inlet manifolds that will throw an engine light.Later cars ~2010 on don't suffer from this. 

6 speed tiptronic box is very tough with any sort of problem rare but an oil change at 100k is often recommended as a bit of preventative maintenance.

DPF 120,000 miles
EGR 100-150,000 miles
Inlet Manifold Swirl Flaps 100,000 miles
Suspension 120,000
Cup holders dry as there is a ECU underneath

Is there anything else I should look out for.