Dews Motor Group will open a Mitsubishi dealership in Brighouse, Yorkshire, on January 3rd.
The car dealership will cover the Huddersfield and Halifax territories, and will become the fifth brand in family-owned Dews' portfolio across four sites.
It has Vauxhall and Alfa Romeo franchises in the same Bradford Road location.
Dews was founded in 1910 by Ernest Dews, grandfather of current chairman David Hamer.
Craig Hamer, managing director of Dews Motor Group, said: "We see the addition of Mitsubishi to our brand portfolio as an opportunity to provide real choices for our customers – and to provide a thoroughbred alternative to the ‘all terrain’ segment within Huddersfield and Halifax."
Mitsubishi Motors in the UK’s managing director, Lance Bradley, said: "We are delighted that Dews have chosen Mitsubishi to grow their portfolio in the West Yorkshire area. Huddersfield and Halifax are strong territories for our product range and we are confident that Dews Motor Group will serve our customers well."