Scirocco Register

My scirocco is really beginning to pee me off, again today the car started spluttering and losing power, followed by the engine management light then the epc light, called the RAC and after waiting 90 mins it was diagnosed as misfire cylinders 1 and 3, two coil packs replaced (RAC patrols carry spares)one of which was previously replaced by the RAC feb 2014 so was just out of the 12 month warrenty,in total I have replaced four seperate packs,getting passed a joke.

What could be causing these failures?

I've not got a newer Scirocco but my wife owed a polo with coil pack and all VAG's do seem to have a problem with when 1 went, the next one went a month later so I replace all for new ones at 90,000 miles, you can buy genuine VW ones from Eurocarparts and I kept a working spare in the boot just incase.
What make are the ones RAC are fitting to your car?

I had a Leon Cupra R that munched coil packs... Always carried a working spare too!