Rust blisters on rear wheel arches / quarter panels. Manufacturing fault on this age Premacy. Mazda offered to repair, but dealer wanted more than the offer.
Traded it in without repair after months of fruitless negotiation.
Rear brakes replaced at 40000 miles.
Disappointed when rust appeared, otherwise a reliable practical workhorse.
I have read many times that dealers repaired this free of charge on 2003 models with full history - it appears mine has had this done.