Born in Melbourn, Sowery began karting in 2004 at the age of eight and claimed titles in Easykart, Junior TKM and Junior Rotax GP.
Lower Formulae
In 2014, Sowery graduated to single-seaters, beginning with the MSV F3 Cup, where he took the title with ten race wins and fourteen podiums. Later that year, Sowery partook in the MRF Challenge, in which he also claimed the title.
The following year, Sowery entered a few races MSA Formula with MBM Motorsport, where he finished fourteenth with eighty points.
In 2016, Sowery graduated to British F3 with Lanan Racing. There he claimed five victories and led the standings for a time before finishing third behind eventual champion Matheus Leist.
Sowery returned to the MRF Challenge in 2016-17 but only as a development driver working on future upgrades for the Championship.