The Volkswagen-owned marque approached agencies directly in January to invite them to pitch for the brief, which covers mainly dealer and direct marketing, events and regional advertising.
Atomic pitched against McCann London, Adam & Eve/DDB and the incumbent, Connect Group, which had worked on the business for more than a decade.
Adam & Eve/DDB holds the bulk of the VW group business. Last year, it strengthened its grip on the account by picking up VW Commercial Vehicles.
Bentley’s rival luxury car brand Rolls-Royce is also reviewing its advertising, which is handled by Partners Andrews Aldridge, in a process managed by AAR.