The Russian Circuit Racing Series (RCRS) is a national Russian racing series created in 2004. It incorporates four classes: touring, super-production, touring-light, national class and national-junior. Sergey Krylov has been the championship's promoter since 2004, in 2014 Oleg Petrikov became promoter of the series.

The Audi A4 is a line of luxury compact executive cars produced since 1994 by the German car manufacturer Audi, a subsidiary of the Volkswagen Group. The A4 has been built in five generations and is based on the Volkswagen Group B platform. The first generation A4 succeeded the Audi 80. The automaker's internal numbering treats the A4 as a continuation of the Audi 80 lineage, with the initial A4 designated as the B5-series, followed by the B6, B7, B8, and the B9.