Its former Maidenhead office has been retained by GM as a base for IT staff.
The brand had already been sharing a number of back office, fleet and administrative functions with Vauxhall at Griffin House, but says the move will improve efficiencies further.
PR manager Gary Axom says: “The move to Luton will bring real benefits to service levels by integrating more fully with the GM UK structure, enabling the brand to grow further still.”
At the end of January, Saab held a 1.05% market share with 1,655 registrations (up 2.73% on December), just behind rival Volvo, which reported 1,808 units and 1.15% share. It claims to be the fastest growing premium marque in the UK – in 2005 it sold a record 27,500 cars.
GM’s other UK brands, Chevrolet and Cadillac, still have separate offices – the former close to Griffin House in Luton, the latter in Bracknell, Berkshire.