With little experience in karting Cunha began his motorsport career in 2008 in Formula racing. For Razia sport he participated in three race weekends of the South American Formula 3 Championship. To have made no points, he finished the season on the 21th Place. 2009 denied Cunha for Razia sport the whole season in the South American Formula 3 He was seven times on the podium and finished the season as the best pilot, who had not won a race in fifth place in the championship. 2010 moved to Cunha Bassan Motorsport. With five victories, he won the league title ahead of Bruno Andrade. He also made his first racing experience in Europe and participated in per a race weekend of the British Formula 3 Championship and the British Formula Renault.
2011 Cunha went for T-Sport in the British Formula 3 Championship and for the Hache team in the European F3 Open, five of eight events at the start. Cunha finished the season of the British Championship with -36 points at the 26th and last place in the driver standings. The negative score came about because his 40 points were deducted. Cunha took part in a Formula 3 race another Formula 3 championship on a route on which the British Formula 3 Championship also fought out an event. This was a breach of the sporting regulations. In the European F3 Open Cunha won a race, got a total of three times on the podium and was at the end of the season in ninth place in the driver standings. In addition, he was second behind Lucas Foresti 2011 at F3 Brazil Open.
2012 went Cunha along with zoel Amberg for Pons Racing in the Formula Renault 3.5 at the start. Both pilots were given a two-year contract. Cunha remained, in contrast to Amberg, who scored a point with no points and ended the season in 29th place. In addition, he performed for Ombra Racing at two race weekends of the Auto GP World Series. 2013 left Cunha despite original contract Pons Racing and moved within the Formula Renault 3.5 to Formula AV. Cunha had no points and reached 27th place in the overall standings, while his teammate Arthur Pic had become with 74 points eighth.
- 2008: South American Formula 3 ( No. 21 )
- 2009: South American Formula 3 ( 5th place)
- 2010: South American Formula 3 (Master)
- 2010: British Formula 3 ( No. 21 )
- 2010: British Formula Renault ( place 31 )
- 2011: British Formula 3 ( 26th place )
- 2011: European F3 Open ( 9th place)
- 2012: Formula Renault 3.5 ( 29th place )
- 2012: Auto GP World Series (No. 18)
- 2013: Formula Renault 3.5 ( rank 27 )