Q7 Rough Idle?

[KayKhan]

Hi
Has anyone experienced a rough idle on 2010 Q7? Mine revs upto around 900rpm but im adament should be 750-800rpm all the time? No ML lights or anything. Apperntly this is normal on these but i feel i might have a vacuum leak
Any help is appreciated

 

[RS4B5]

Does the needle move on idle

 

[KayKhan]

Yes. Moves from like 750-800..to 900?

 

[RS4B5]

Have you had it scanned

 

[KayKhan]

No error lights or fault codes...