I am organising the design & manufacture of an upgraded air filter for the new A3. It will be a drop in replacement for the standard paper filter but will be far superior. With the extended service intervals on the new A3 by the time your service comes around your paper filter will be pretty dirty (i.e. inefficient). This item will perform for years without deterioration. So is anyone interested ? Pricing to be confirmed but is likely to be in the £50-£60 range.