McLaughlin, who will be part of Team Penske full-time within the US collection subsequent season, made regular progress within the first half of the race, transferring from his twenty first beginning spot to seventeenth.
However his cameo look got here to an abrupt finish on a Lap 47 restart, an try at passing Marco Andretti resulting in contact that tipped the Kiwi right into a spin.
That left him him within the path of Rinus Veekay, the next harm forcing the Supercars champion out of the race, whereas the Dutchman was in a position to proceed.
Despite not seeing the end, McLaughlin was joyful together with his long-awaited IndyCar debut.
“It was awesome. Far out, best day of my life bar my wedding,” McLaughlin advised the TV broadcast.
“The Shell V-Power Nitro+ IndyCar was going well and then I just tried to make a move, I tried to block Marco.
“I felt like I was there or thereabouts and just had half a rear-lock, I’m not exactly sure. Cold tyres caught me out a little bit.
“Pretty disappointed but I had a lot of fun today.”
McLaughlin’s Penske teammate Josef Newgarden gained the St. Pete race, as fellow New Zealander Scott Dixon claimed a historic sixth IndyCar title.