[4] Benito and his co-driver Borja Rozada, won in México, Argentina and España rallies, plus a second place in Germany, thereby the Mexican-Spaniard duo got the PWRC world championship with 109 points, over the Argentinian team Marcos Ligato and Rubén García (88 points).

[11][12] Due to lack of sponsorship Guerra Jr. did not participate in Monaco and Sweden rallies but in his country México he started with Citroën Racing, a privateer team in the WRC in 2013, with his co-driver Borja Rozada.

On his very first race in the WRC, as a rookie in the category, Guerra gets a great result entering in the top-ten of the Mexican rally, thus he gets his first four points for the championship ending at 8th overall position behind the winner Sébastien Ogier for 12:49.8 minutes.

[13][14][15] In the twenty-ninth edition of the Race of Champions, held at Foro Sol in Mexico City, Guerra defeated French driver Loïc Duval, winner of 2013 24 Hours of Le Mans and 2013 WEC, in the final.

On his way to the final match against Duval, Guerra Jr. defeated drivers like Sebastian Vettel, Pierre Gasly, Daniel Suárez, Esteban Gutiérrez, among others.