The FIA and the championship's promoter Eurosport Events are understood to be looking to replace the current Super 2000 TC1 rules after two more seasons, though some reports suggest this could be as early as 2018.

TC1 was introduced in 2014 and is currently in its third year, with the introduction coinciding with the start of Citroen's three-year programme.

Class One is based on the current DTM and Super GT regulations, but is yet to be introduced to those championships after a number of delays.

The WTCC promoter is understood to have presented a proposal to the teams and manufacturers at the most recent round in Shanghai, China, however the promoter is unable to comment on the negotiations at present.

“As promoter of the WTCC, Eurosport Events is working closely with the FIA and, indeed, is in contact with a number of manufacturers," said series promoter Francois Ribeiro.

"The long-term future of touring car racing is important to our group but there’s nothing further we can say at this time."

The key differences between the current DTM rules and Class One include the introduction of a four-cylinder turbocharged engine (which WTCC already has), as well as a focus on reducing the operational and development costs, and a more basic aerodynamic package.

A potential introduction of Class One to WTCC would mean that the current manufacturers Citroen (although not competing in an official capacity after 2016), Lada and Volvo could be left without eligible cars if TC1 is fully phased out, with Honda's current Civic also sidelined.

Manufacturers which currently compete in the DTM and the Japanese Super GT include Audi, BMW, Mercedes, Lexus, Honda and Nissan, however all participate with premium models.

Neil Hudson / TouringCarTimes