In 2024, Solberg joined Formula 1 driver Lando Norris' Quadrant Athlete program alongside three others, including WMX racer Lotte van Drunen, Moto3 pilot Iván Ortolá, and Olympic Gold medal winner Keegan Palmer.

Solberg competed in his second season of the Latvian Rally Championship in 2018, where he finished 2nd in both the LRC3 and U28 categories behind European champion Mārtiņš Sesks.

[3] He also drove six rounds of the American Rally Championship in a Subaru WRX STI, with a livery based on his father's iconic blue and gold WRC Championship-winning car.

[5] For 2021 Solberg joined the reigning WRC champions, Hyundai Motorsport, with a plan to drive the full WRC-2 season.

[9] Alongside his rallying commitments, Solberg also entered the RallyX Nordic Championship in 2017, driving his father's 600bhp FIA World Rallycross Championship-winning DS3.

His father had jokingly promised that Solberg could drive the car if he could get all the licences and agreements in place, assuming that it wouldn't be possible given his young age.

[10] In 2020 Solberg made a one-off return to rallycross, driving the DS3 in the All-Star Magic Weekend at Höljes – an event aimed to bring motorsport to people around the world online during the COVID-19 pandemic.

The 'one-off' return became a 'two-off' after he took part in the Euro RX round at Höljes, winning on track ahead of Anton Marklund and Johan Kristoffersson, but later being controversially disqualified for an overweight car.

Solberg's 2018 RallyX Nordic title success, as well as his rally career so far and personal journey, was the subject of the 2019 film Born2Drive which was released in cinemas across Norway.