On January 25, 2021 McLaughlin and Penske announced that PPG Paints would be the primary sponsor for most of his entries in the Indycar series, while Florida based office technology supplier DEX Imaging would sponsor him for select events. For the 2021 Indianapolis 500 he drove a Pennzoil-sponsored car, with the livery paying homage to that company's famed "Yellow Submarine" designs of the 1980s.