Team and driver changes
Chevrolet replaced the retiring Nicola Larini in their three-car line-up with ex-SEAT Sport driver Yvan Muller. A fourth Chevrolet Cruze was entered in Italy for Leonel Pernía, with Nika Racing running the car under the Chevrolet Motorsport Sweden banner. Vincent Radermecker drove the car for the RML-run squad at the next race in Belgium, with Cacá Bueno driving it in the UK.
BMW Motorsport announced they were reducing their participation from a five-car team to a two-car team, with Augusto Farfus moving from BMW Team Germany to Team RBM to join Andy Priaulx. Former BMW Team Italy-Spain driver Alex Zanardi retired from the series, while former BMW Team Germany driver Jörg Müller raced in the Le Mans Series with Schnitzer.
SEAT Sport withdrew from the series for 2010, but helped Sunred to form a new team SR-Sport, for whom Independents champion Tom Coronel and ex-SEAT Sport drivers Jordi Gené, Tiago Monteiro and Gabriele Tarquini drove for.
Stefano D'Aste returned to Scuderia Proteam Motorsport, for whom he raced in 2005, 2006 and 2008, moving from Wiechers-Sport. His seat was taken by Mehdi Bennani, who moved from Exagon Engineering. D'Aste was joined at Proteam by Sergio Hernández, who returned to Proteam from BMW Team Italy-Spain. Fabio Fabiani raced an additional car for the team at his home event in Italy, just as he did in 2009.
Andrey Romanov rejoined the series and the Liqui Moly Team Engstler setup. He replaced Kristian Poulsen, who raced with his own Poulsen Motorsport team. Romanov could not drive at Brands Hatch for personal reasons, so was replaced by Tim Coronel.
Michel Nykjær joined SUNRED Engineering after racing in the WTCC for Perfection Racing at the 2009 Race of Germany. He replaced Tom Boardman, who returned to the BTCC, driving for Special Tuning (UK). Boardman returned to the WTCC with SUNRED for his home event. Fredy Barth joined the team from the SEAT León Eurocup, racing under the SEAT Swiss Team by SUNRED banner. Zengő Dension Motorsport joined the series, along with their driver, León Eurocup champion Norbert Michelisz, who drove the SUNRED prize car on two occasions – in 2008 and 2009.
British Touring Car team Bamboo Engineering joined the WTCC, along with their driver Harry Vaulkhard. Darryl O'Young, who drove in the FIA GT Championship with Prospeed Competition in 2009, was his teammate for most of this season, before Vaulkhard was forced to withdraw owing to a lack of sponsorship, and was replaced by Yukinori Taniguchi.
James Thompson, who drove for Lada Sport in 2009, was set to race at certain European rounds for Hartmann Racing, in addition to campaigns in the Danish Touring Car Championship and European Touring Car Cup, but left the team, whilst Lada did not return for 2010.
SEAT's Rickard Rydell elected to take a sabbatical from racing for the 2010 season. Instead, he became a TV pundit for Viasat Motor's coverage of the Swedish Touring Car Championship.
Jaap van Lagen returned to the Porsche Supercup, a series in which he finished seventh in 2008.
Without drives for 2010 were Lada's Kirill Ladygin, and Félix Porteiro, who drove for Proteam in 2009.
Maurer Motorsport were set to run three Chevrolet Lacettis at Marrakech for Moroccan racers Ismaïl Sbaï, Youssaf El Marnissi and Larbi Tadlaoui. Tadlaoui did not attend due to personal reasons, while El Marnissi crashed in the Friday test session.
Pierre-Yves Corthals made a one-off return to the series with his old team, Exagon Engineering, for his home event in Belgium.
Having been without a drive in any series, 2009 British Touring Car Champion Colin Turkington rejoined the series in Portugal with West Surrey Racing, with backing from eBay Motors.
Swedish championship team Polestar Racing and driver Robert Dahlgren raced once again at Brands Hatch, and also raced in Japan, in a nationally-homologated Volvo C30.
