It began on 21 March at Autódromo José Carlos Pace and ended on 28 November at the same venue after eight rounds.
Other wins were taken by Andreas Mattheis and Xandy Negrão, who swept the races at Rio de Janeiro, Claudio Dahruj and Rafael Daniel swept the first Interlagos meeting, while Wagner Ebrahim won three of the last four races driving solo in his66666 Viper Competition Coupe.
Guerra took six victories as a solo driver, but two retirements during the season thwarted the chances of a championship title.
Three-time race winner Cristiano Federico – sharing his car with Leonardo Medrado for two victories, and Guto Negrão for one – finished in fourth place, ahead of Alan Hellmeister and Sergio Laganá, who won at Interlagos 1 and Velopark.
Other victories were claimed by Marçal Mello and William Freire in Rio de Janeiro, and Carlos Burza and Leonardo Burti swept the second Curitiba weekend.