Another A6 niggle (2.0tdi)

[Escort2dr]

Occasionally, when lifting off the throttle on my 2.0tdi, there is a brief 'moo' or 'hoot' sound, usually noticeable in 3rd gear, and it only happens relatively rarely on a journey i.e. not every time.

Two questions guys:

1) What MORE can go wrong with this car?!
2) What is likely to be the cause and the cost to fix?

A quick internet search seems to suggest something to do with the EGR. It hasn't happened until recently and I'm sure I heard something similar in a mate's BMW 320d recently.

Cheers.

[PGM]

We had the EGR problem on ours too although not with the symptoms you have had.

As you say, the sheer amount of problems and costs with the A6 made us replace it with a Subaru Legacy!

[gizlaroc]

I think it is more a case of problems with modern diesels, it is always the diesels that you here have problems all the time.