After last year's FIA World Touring Car Championship, Cyan Racing stayed behind at the Nurburgring to perform a secret test on the Volvo S60 Polestar road car.
The final meeting of the 2016 FIA WTCC season, in Qatar, marked the end of Citroen Racing's involvement in the championship.
Citroen has retained its FIA World Touring Car Championship title after taking pole position and winning both races in Shanghai.
The Citroen Total team monopolised the podium in FIA WTCC races at the Slovakia Ring, with the top three finished in exactly the same order as in qualifying.
