Former Sauber driver Pascal Wehrlein will return to the German Touring Car series one more time with Mercedes this year.
Wehrlein dropped out of Formula 1 when he was replaced by rookie Charles Leclerc for the 2018 season.
But Mercedes, where he won the German Touring Car (DTM) title in 2015, named the 23-year-old German in their season line-up on Wednesday.
It will be the Silver Arrows' final year in DTM before they switch focus to the all-electric Formula E championship.
Wehrlein spent three years in DTM, becoming the youngest champion in 2015, before entering F1 with now-defunct Manor Racing in 2016 and then switching to Swiss-based Sauber for 2017.
But he was dropped in the winter, despite scoring all of Sauber's five points last year.
The team, now sponsored by Fiat Chrysler brand Alfa Romeo and with close links to Ferrari, instead chose Ferrari academy driver Leclerc - last year’s dominant Formula Two champion.