If your front brakes are similar to the Panda....
uneven pad wear is usually down to sticky/corroded sliding calipers:
there is one cylinder per disk, the piston pushes directly on one pad (the one which continues to wear), the other pad is "pulled" by the body of the cylinder and the associated metal bits. The cylinder needs to slide in the grooves for this to happen, but you have an alloy cylinder resting on a steel base, and they corrode together.
When you take the cylinder off to do the pads clean all these sliding surfaces up so they are nice and smooth.
Don't breath in the dust when you clean it all up.[xx(]
On reassembly use "Copperease" or similar high temperature grease on the surfaces you've just cleaned.
DON'T get any of it on the disks or pad grippy face.
Your front wheel bearings will appreciate it, as they aren't being pushed against when you stop.
Your stopping power will improve by upto 100% from how it was - using both sides of the pads instead of just one.
Can Pete please confirm this is true on the grand-daughter of the Panda[?]
Regards
John H