Vitaly Petrov will join Paul di Resta in DTM this season after signing with Mercedes.
The Russian racer, who was dropped by Caterham at the end of the 2012 season, had hoped to return to Formula One.
However, with that door closed he tested a DTM car in January and impressed the Mercedes team.
Petrov has now signed a deal to race a DTM Mercedes AMG C-Coupé in the Championship, which begins at Hockenheim in May.
"The DTM is a great racing series and I'm very happy that Mercedes-Benz are giving me the chance to compete against the world's best touring car drivers in the DTM," he said.
"I'm aware that I've got a steep learning curve ahead of me, but I love a challenge and accept it gladly.
"At my first test in Portimão, I was able to make my first acquaintance with the team and get a feel for the car, which is very important for me in order to play to my strengths.
"Motor racing is becoming ever more popular in Russia - last year, the DTM debuted at the Moscow Raceway and Sochi will host Formula 1 for the first time this year.
"I am certain that we will see many more Russian racing drivers in various series in the future and I hope that I can do my part in the DTM to make our sport more popular in my home country."