Our People

As the South Australian and Northern Territory peak organisation for the automotive retail, service and repair sector, the MTA's leadership team plays a key role in encouraging the growth and development of talented people across all areas of our business as well as delivering key outcomes for our members.

MTA Executive

Darrell Jacobs
Chief Executive Officer


Tracy Simpson
Executive Assistant


Louise Connelly
Financial Controller


For MTA Executive, please call 8291 2000


MTA Training & Employment

Jason Polgreen

General Manager Automotive Business
jpolgreen@mtasant.com.au


Jodi Ryan

General Manager, Apprenticeships
jryan@mtasant.com.au


Rosemary Mercorella

Apprentice Services Manager
rmercorella@mtasant.com.au

David Wheatcroft

WHS & RTW Coordinator
dwheatcroft@mtasant.com.au – 0409 934 580


David Warren

MTA Schools Pathway Coordinator
dwarren@mtasant.com.au – 0401 674 272



MTA Member Services

Nathan Groves

MTA SA/NT Automotive Business Manager
ngroves@mtasant.com.au


Kaes Cillessen

General Manager - Media, Marketing and Policy
kcillessen@mtasant.com.au



Ronan O'Brien

Workplace Relations and Governance Manager
robrien@mtasant.com.au

Andrew Stiles

MTA SA/NT Division Manager

astiles@mtasant.com.au – 0477 827 913

Lisa Cawthorne

MTA SA/NT Automotive Business Development Specialist
lcawthorne@mtasant.com.au - 0408 908 254



For all media enquiries, please contact Miles Hudson, MTA Media and Communications Advisor.