There are 3 marques of the MK3
MK3 2005 - 2008
MK3.5 2009 - 2013
MK3.75 2013 - 2015
All pretty much the same with a few face lifts and cosmetic changes.
2012 to 2014 would put you in the MK3.5 - MK3.75 bracket.
Finding a 5 - 7 year old car with 10,000 miles might be a challenge though.
If you do go to view any, a good feature to look at.
Each and every body panel has a holographic sticker, bonnet, doors, wings, boot lid, door shuts, rear wings, maybe even the front door pillars.
These should all match with the VIN number.
If any are different, or missing, then ask yourself the question why.
Light corrosion is common under the boot lid where the number plate lights are situated.
It’s never too bad, and is easily fixed, but could be used as bargaining power when it comes to negotiation.
Similarly under the bonnet (but i’ve not seen this)
Underbody seal can be a bit hit and miss, so be prepared to crawl underneath and give the floor and chassis a good looking over, although I doubt that any thing serious would be happening on a 5 year old car. Having said that, never say never.
Seat belts can be lazy to retract.
Decent results can be had by cleaning them thoroughly, but again, this could be good bargaining power at negotiation time.
Another common issue is water ingress in the passenger footwell.
Again, another bargaining chip, especially if buying from a Mazda dealership.