Ahh , ok , most mini's I've seen have only had minor rust starting under the hinges , but if not fixed early it can eat out the hinge mounting area . This panel incorporates the side of the mini too but there used to be a rust replacement panel of just the front bit available , not sure if it still is or not but it's a fairly flat panel so if you're reasonable with welding (or know someone who is) then it isn't a big drama . Just takes a bit of time to remove the door and clear the paint/rust off to see what you've got underneath it . Mini's often rust at the bottom of the panel because of moisture getting trapped between the two layers of steel but it's have to be bad for it to be a lost cause .
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