Hi, to all.

The other half has a 2010 A3 Cab S Line 1.8T only got 100k on the clock and she loves it but at the moment she hates it.

In less than 1000 miles its gone through a complete set of spark plug and a full set of coil pack

First had a miss fire on number 2 checked via OBD reader with P302 code. New plug fitted no change swapped coil pack between cly2 and cly3 fault moved to cly 3. So with that in mind new coil pack fitted. Not only had the coil pack failed but it also caused the spark plug to fail.

Then it happened again but on number 3 cly. it appears that something is causing the coil packs to fail which then takes out the plugs.

So far I have now changed all plugs and coil packs (new Bosch have been fitted) Then tonight number 3 again has failed.

Any ideas on where to start looking?..

Thanks

John

I can't really suggest anything except perhaps a poor earth connection at the coil pack. Beyond that I have no idea.