On 5 March it was announced that all four drivers would compete for Münnich Motorsport, which would expand from two cars last season.
[26] Sébastien Loeb Racing, which had run four Golf GTI TCR cars during the 2019 season, announced on 31 January 2020 that it would leave the series.
Engstler Motorsport returned to the series for the first time since the 2014 season (back when it was called the World Touring Car Championship) fielding the remaining two Hyundai cars under the Engstler Hyundai N Liqui Moly Racing Team name for Luca Engstler —who made his full-season début after entering once as a wildcard entry for the 2019 season as well as being replacement for Augusto Farfus at the Macau race weekend last year— and Nicky Catsburg.
[31] On 14 May 2020, it was announced that the Cupra Leon Competición TCR would compete in the championship, with teams and drivers yet to be named.
[32] On 30 May 2020, it was announced that Zengő Motorsport would return to the WTCR, running two new León Competición TCR cars, for Bence Boldizs and a yet-to-be-named driver.
[2] Aurélien Comte later replaced Young from the Slovakia Race onwards, thereby switching from DG Sport Compétition to Vuković Motorsport.