Do you have a good VAG Specialist near you, where are you located - maybe we can suggest? Audi will charge min £80 just for diagnosis then rinse you on the rest. If your current guy isn't getting nearer a solution then you need to look elsewhere...
Current guy has scanned it, replaced glow plugs and now wants to work on next solution on Monday such as dpf EGR etc. I live in the Bradford area if there is anyone you could recommend?

EDIT; if it makes any difference the error code was P161A
 
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Found turbo seals leaking oil. Is that the culprit? Can they leak because of the Nob who did my service? (Put in too much engine oil) Now I can buy a new turbo or should I get my reconditioned from a company in Leeds who offer a 12 month warranty.
 
My opinion is that he overfilled with oil to prevent you from getting check engine oil light too soon, he literally knew about the leaking seals and put in too much oil so you can drive for a month or two without noticing the leak.
 
I don't think the seals are leaking because of too much oil (@Rideen raises a good point) but I suspect they were shot any way. The previous owner hadn't driven for 3 weeks and she had a new car - possibly indicators that something was wrong hence selling. (I'm not a conspiracy theorist). Maybe it's just unfortunate.

Re New or Refurbed turbo - you said you'll get 12mth on Refurbed, what would the warranty be on New and what is the price differential?
 
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On the positive side, sounds as if it was caught quite early as 1) you weren't noticing any performance dip and 2) the oil level wasn't falling that much to damage the engine generally.
 
Yep no play in turbo, mechanic says turbo is as strong as it can be at 80,000, no play on ends. Just seals leaking from too much engine oil. Plus repairing my own turbo is going to give me 24 months warranty.
 
To educate me, could the mechanic confirm how too much oil would cause the seals to leak? What was the condition of your PCV valve like? If this was blocked/faulty then the oil return from the turbo could cause seal issues.
 
To educate me, could the mechanic confirm how too much oil would cause the seals to leak? What was the condition of your PCV valve like? If this was blocked/faulty then the oil return from the turbo could cause seal issues.
Unfortunately i won't be with the mechanic till tomorrow. I will ask him then. But asking the turbo specialist, he said too much engine oil can cause higher oil pressure. Checking online quite a bit people do say higher oil level can cause turbo to leake. But to be safe what should I be looking out for? (Don't want new turbo to leak because of a primary problem that hasn't fixed)
 
Drove car today, after repaired turbo installed, still smoking from exhaust (expected as some leaked oil inside exhaust needs to be burnt off) but what is concerning is smoke from under the bonnet. Same place as in the pictures above. Going to drive it today to see if smoke settles.
 
Drove car today, after repaired turbo installed, still smoking from exhaust (expected as some leaked oil inside exhaust needs to be burnt off) but what is concerning is smoke from under the bonnet. Same place as in the pictures above. Going to drive it today to see if smoke settles.
Drove it today. Thank god finally no more smoke from exhaust or under bonnet. First few answers were correct, turbo issue, Let's just hope there is no underlying problems that actually made the turbo leak. Mpgs were on average about 60 so all should be good. (Pcv valve and air filter were clear as well)
 
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