During his tenure the group increased passenger car market share to 27%, taking Volkswagen to be the number one-selling car brand in Ireland.
The Golf became the best-selling car in Ireland and Audi became the leader in the premium segment.
He oversaw a record market share for SKODA and SEAT, the latter became Ireland's fastest-growing brand in 2013.
Volkswagen Commercial Vehicles also claimed 25% of the light commercial vehicle market.
Volkswagen Ireland has overhauled its customer service, too.
Internally, the company is acknowledged as one of Ireland's best workplaces in both the 2013 and 2014 Great Places to Work.
"I have thoroughly enjoyed my time in Ireland and it was very rewarding to see the improvements we were able to make and the impact we achieved with the company in such a short space of time," said Elliott.
"This is a very special country. The motor industry here faces a unique set of challenges through its harsh taxation regime, but I have loved my time here and my family and I will miss Ireland immensely."
Elliott will take up a new role in early September as Managing Director of MAN Truck & Bus UK Ltd.
His successor at VW will be announced in the near future.
