I've just finished replacing an engine in a 2012 Cooper base model. I got it with a crunched front bumper, grille and hood. Scanning through some junkyards, I found a 2009 base model with the parts I need. Are 2009 and 2012 body parts interchangeable? I know there was a minor engine update in 2011 (N12 to N16) but I'm wondering if body parts changed then too.

 

You can check their part numbers on realoem.

 

Thanks for that information. I was not aware of that website but I'll check it out.