MOT is looming....

..as matt says get some rustkiller INSIDE the sills as most garages only brush seal underneath and its from the inside of box sections that cougs are most threatened.

Thats exactly what happened to mine, they did a good job all the bottom of it but never did inside the sill

For the little effort it takes to remove the panel and get some kurust and then paint in there its worth it
 
I pulled the back seats and trim and sprayed some Bilt Hamber in last year, so that should still be ok (I ditched the stoopid sponges at the same time)