is a mechanic a tradie

Yes—mechanics are absolutely tradies in Australia. They complete apprenticeships and earn trade qualifications like a Certificate III in Light Vehicle Mechanical Technology, with licensing/registration as required by the state. If someone in greasy overalls rescues your ute and knows their torque specs from their elbow, that’s a tradesperson. Call them a “technician” if you must, but the toolbox and TAFE transcript say tradie. They can sign off on repairs and, where accredited, roadworthy work—because skills aren’t free. Shout them a coffee, not just a “mate’s rate”.