[8] Having scored six other podiums, Aron finished the year in third behind Red Bull junior driver Dennis Hauger and Brazilian FDA-member Gianluca Petecof.

[13] the Estonian was outscored by his more experienced teammates Grégoire Saucy and eventual champion Victor Martins and finished eleventh in the standings.

[14] In 2021 Aron moved back to Prema to partner David Vidales and Dino Beganovic in the Formula Regional European Championship.

[15] The Estonian's first podium came at the opening round at Imola, where he finished second in race 2, being beaten only by previous year's teammate Grégoire Saucy.

[18] After a round in which he finished fourth and twelfth in Valencia, Aron claimed his first pole position of the season at the Mugello Circuit.

[37] The final round in Mugello witnessed Aron notch up yet another victory in the first race, but his title challenge ended as teammate Dino Beganovic was crowned champion.

[43] During the following month, the team confirmed that Aron had signed up to compete in the 2023 F3 season, partnering FREC rival Dino Beganovic and GB3 champion Zak O'Sullivan.

[44] He had a solid debut in Bahrain, finishing fifth in his first outing, but in the feature race, ended outside the points after a penalty for forcing teammate O'Sullivan wide.

A safety car helped to close the gap to race leader Pepe Martí, and Aron overhauled him for his first and only win of the season.

[56][57] The feature race provided contrasting fortunes, as he would clip his front wing in a battle for the lead with Grégoire Saucy and Aron had to pit for repairs.

[65] His failure to secure pole position handed Gabriel Bortoleto, the F3 title as Aron was now 38 points behind the Brazilian with 37 left on offer.

[66] His sprint race was over within seconds, as Caio Collet hit him, causing Aron to suffer a rear puncture and lose control, slamming into Jonny Edgar and Martí.

[68] Aron finished third in the standings with 112 points, achieving one win and four podiums, and helping Prema to clinch the teams' title.

[71] Prior to the final round in Yas Marina for the 2023 FIA Formula 2 Championship, Trident announced they had signed Aron to replace Clément Novalak.

[75] Qualifying 12th for the Bahrain opener, he made a charge in the sprint race to fifth place, barely holding off former F3 rival Gabriel Bortoleto.

[77] Qualifying on reverse pole in Jeddah, Aron led the sprint early on but dropped to third at the flag after losing out to Richard Verschoor and Dennis Hauger.

[82][83] In Imola, Aron avoided the carnage at the start of the sprint to take the lead but was passed by Franco Colapinto on the last lap, missing out on a first win.

[88][89] Initially finishing fourth in the sprint, Juan Manuel Correa ahead was penalised for track limits, and Aron was promoted to end on the podium once again.

The feature race was not better as Aron would get a penalty for colliding with Joshua Dürksen on lap 2 leading to a 12th place finish, and therefore dropped to second in the standings.

[99][100] In the feature race, Aron fought for the lead and later dropped to third place as title rivals Isack Hadjar and Gabriel Bortoleto passed him.

[105] He replicated that result in the feature race, meaning that Aron sat fourth in the standings heading into the final two rounds.

[106] Qatar saw Aron qualifying on pole for the fourth time,[107][108] and a charge in the sprint race saw him finish fifth, however a penalty for a collision with Victor Martins dropped him to seventh.

[109] In the feature race, he lost the lead to Bortoleto at the start, but after the Brazilian received a five-second penalty ahead, Aron remained within striking distance and eventually inherited first place, scoring his first win in Formula 2.

[113] A fine drive in the sprint race secured him with third place in the end,[114] but was disqualified due to an illegal modification to the DRS actuator.