The 27-year-old Scot won the DTM title with Mercedes in 2010.
"It feels really good to be back in the DTM and to see so many
familiar faces again," he said in a statement.
"Much has changed since my last DTM race in Shanghai in 2010
with new cars, a new set of rules and a third manufacturer, but
what has not changed is my enormous appetite for success."
Force India have changed their lineup since last season with
Germany's Nico Hulkenberg and Mexican Sergio Perez their 2014
(Reporting by Alan Baldwin; editing by Patrick Johnston)
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