But not just any car.
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Adesanya dropped in excess of half-a-million dollars on an orange 2019 McLaren 720s spider - announcing on Instagram that he was "overcompensating" by buying the car.
According to the AA, this model is valued at between $475,000 and $600,000.
It features twin-hinged dihedral doors and goes from 0-60mph in just 2.9 seconds.
On Wednesday Adesanya, known by the moniker "Stylebender", sent his more than 1.6 million followers into a frenzy by posting a picture to his Instagram story of a crashed McLaren of the same model and colour with the caption "F***!! ... Oh well...".
However, it seems as if though Adesanya got the last laugh, with the picture turning out to be of a similar car crashed in the UK.
Earlier Adesanya, who took home a reported US$490,000 (NZ$780,000) from the Whittaker win, could be seen flaunting his money on social media.
He announced shortly after his fight Down Under that he intends to be an active champion taking fights when he can - including a potential future title defence in New Zealand.