Promotions at Inchcape mean a change of leadership for its UK dealerships from October 1.
Connor McCormack, Inchcape UK Retail's finance director, will become its chief executive.
He takes over the post held since 2007 by Spencer Lock, who has been appointed chief executive of Inchcape Australiasia.
McCormack has been with Inchcape for four years, and had previously held senior management roles with Kingfisher, L'Oreal Group and Gillette.
Andre Lacroix, Inchcape group chief executive, said: “These two promotions represent very important steps forward for the group.
"In Spencer Lock and Connor McCormack we have outstanding individuals who both have a track record of excellence in their roles.
"Connor’s operational leadership skills and customer first attitude will build on the highly successful business we have here in the UK, where we continue to grow market share.”