[1] It was marketed as a cost-effective spin-off of the WTCC, targeted at C-segment hatchbacks production-based touring cars.

On 29 July 2014, former WTCC driver Pepe Oriola said in an interview with TouringCarTimes that he hopes to compete in the new series, because he was set to drive for the Onyx Race Engineering team in the 2014 WTCC season with their new Ford Fiesta TC1 car for the last part of the season, before the project was abandoned with no support for homologation from Ford.

[5] On 15 September 2014, the TCR organisation announced the first cars, teams, regulations and events of its inaugural season in 2015.

[6] Target Competition became the first team to confirm entry in the series and will run SEAT León Eurocup cars in 2015.

On 20 March the TCR International Series organisation announced the first TV deals for the inaugural season.

[14] Eligible cars: 4/5-door vehicles Body shell: Reinforced production body shell; wheel arch modifications allowed to accommodate tyres Minimum weight: 1250 kg for cars with production gearbox, 1285 kg for cars with racing gearbox (both including the driver) Minimum overall length: 4.20 metres Maximum overall width: 1.95 metres Engine: Turbo-charged petrol or diesel up to 2.0-litre Torque: 420 Nm Power: 350 PS Lubrication: Wet sump Exhaust: Homologated catalytic converter using production parts Traction: On two wheels Gearbox: Production or TCR International Series sequential; production paddle shift accepted Front Suspension: Production lay-out; parts free design Rear Suspension: Original design of production car with reinforced components Brakes: Wheels: Maximum dimensions of rim: 10″ x 18″ Aerodynamics: These points have been based on the FIA's points system used in the FIA Formula One Championship.