Williams Lea will handle all customer communications, including brochures and marketing literature.
The London-based print management group was awarded the contract over Centurion, which handled Jaguar and Sweden-based Zetwaka, the company responsible for Volvo.
Williams Lea has said it would provide substantial cost savings through the contract, but has not said how or where these will be achieved.
Williams Lea chief operating officer Conor Davey said the contract would deepen the company's expertise within the automotive sector.
Davey also said the two would work in partner-ship to re-engineer and build PAG's longer-term strategy for print sourcing worldwide, including the Far East and the US.
A dedicated Williams Lea team will be based on site with PAG's marketing teams at Gaydon in the UK, and at Gothenburg, Sweden.
PAG UK's head of marketing literature, Chris Masterson, said the company had needed a partner that had a track record for delivering superior automotive products.
The contract is PAG's first marketing outsourcing collaboration between its companies in the UK, Jaguar, LandRover and Aston Martin, and Volvo in Sweden.
Williams Lea declined to give details on a value or length of the contract.
Its other clients include BMW, Abbey, Merrill Lynch, Debenhams and PricewaterhouseCoopers.
Story by Andy Scott
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"Sorry to read this, a big name to go down, hopefully a lot of the £1.8M was insured. We are recruiting operational staff & currently in-talks to assist the clients with immediate requirements."
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