Will this diagnostic cable work with my A3

It won’t work mate, and avoid can commander. It will ruin your car very likely.
 
VagCanPro ori cable is around 250 quid. For time being you could use a cheap vcds clone, and then buy either ori vcds or vcp.
 
If you have an Android phone, OBD Eleven is the best solution for you.
You can get 'Pro' version with OBD2 dongle for around £70. It will read all the codes and perform coding if needed.
Far cheaper than VCDS.
 
  • Like
Reactions: splbound and Oswald
If you have an Android phone, OBD Eleven is the best solution for you.
You can get 'Pro' version with OBD2 dongle for around £70. It will read all the codes and perform coding if needed.
Far cheaper than VCDS.

Spot on that's ideal for what I need at the moment
 
  • Like
Reactions: Daveyonthemove