Before his switch to car racing, Ngatoa was one of the country's most successful karting talents. He started karting in 2011 and immediately shot to prominence by winning the cadet class of the NZ CIK Trophy. Two seasons later he was on the top step of the championship podium again winning the 100cc Junior Restricted Class of the Kartsport NZ North Island Sprint Championship. 2015 saw him claim the Kartsport NZ North Island Sprint Championship in the Rotax Junior class. 2016 followed where he won the Giltrap Group Kartsport NZ Sprint Championship in the Junior Rotax class and demonstrated a seamless transition to circuit racing in the same year by winning the Formula First winter series run at Circuit Chris Amon, Manfeild. Ngatoa would enter his first car racing national championship racing in the
New Zealand Formula First Championship in 2017. Ngatoa finished runner-up to Callum Crawley in a tight championship fight decided in the final round. The following year, he would contend the
Toyota Finance 86 Championship, with modest results, picking up a race win at the final round at
Hampton Downs Motorsport Park. Following a challenging
Toyota Finance 86 Championship campaign filled with multiple mechanical issues, Ngatoa moved into the highly competitive
New Zealand Formula Ford Championship for the 2019/20 season. Ngatoa again struggled with car reliability and mechanical issues, though picked up top 5 and podium results. Following the
New Zealand Formula Ford Championship, Ngatoa would contend the
Toyota Racing Series for the
2021 season. The series proved as a stomping ground for the
Marton teen, picking up three podiums in nine races. Ngatoa's main season highlight would prove to be his masterful pole position for the
2021 New Zealand Grand Prix in the wet, against the likes of
Shane van Gisbergen and
Chris van der Drift. Ngatoa would go on to claim second in the championship behind Matthew Payne. Following this, Ngatoa secured a drive in the
S5000 Australian Drivers Championship for the remaining three rounds in 2021. ==Racing record==