4Driver4

100k miles on a part that has failed on multiple VAG models and been updated half a dozen times. Swap it out on our 2014, or ignore? Any DIY advice?

morski

Its not part of Audi's normal maintenance plan so it wont get changed. If you plan to keep it then its worth doing as a small amount of stretch on the chain will cause rough running prior to complete engine failure

4Driver4

New tensioner will not mitigate chain stretch or guide wear. It's just a question of tensioner failure alone. For other issues, you'll get a CEL long before there is danger of contact between valves and pistons. With a tensioner failure, you get no warning.

If this was an earlier version, there would be no question, but most of the issues were straightened out by 2014. It's just really a question of the possibility of failure of the updated part versus the effort and risk of altering timing from installing new tensioner.

Agreed that for sure, Audi will say not to touch it. "Lifetime" part - lol