In 2013, he raced for MW Arden alongside series debutants Daniil Kvyat and Carlos Sainz Jr.[9] Despite his GP3 commitments, Vișoiu also took part in the 2012 Italian Formula Three Championship with Ghinzani Arco Motorsport.

[10] He finished the season ninth overall, scoring two podiums at the Hungaroring and winning the sprint race at the Mugello Circuit round.

Originally intending to leave motorsport to focus on his education, it was announced that Vișoiu would partake in the 2015 season, racing with Rapax.

After a year out of motorsport in 2016, Vișoiu was signed to Campos Racing from the Monaco round of the 2017 season onwards.

[12] However Vișoiu departed the series and all forms of motorsport before the Jerez round, calling time on his racing career and subsequently being replaced by Álex Palou.