Dixon qualified fourth and was running inside the top 10 when he parked his car on Lap 69 in the pits.
The six-time champion was classified 24th, his worst result of the season.
“Just another joyous hybrid failure,” Dixon remarked.
“It happened early, like maybe Lap 4 or 5 I think we were out.
“We couldn’t deploy and then it had problems [regenerating].
“Once it does it, then it goes into failure mode, so it almost stopped on the caution.
“Then I think with the alarm you get now… if you drive it you’ve got to buy the system.
“I don’t think anybody wants to buy these.”
It’s the second noteworthy hybrid failure in recent rounds.
Chevrolet-powered Ed Carpenter Racing driver Alexander Rossi was left stranded on the front stretch at Indianapolis during the road course race when his hybrid failed.
Like Dixon, Rossi offered a sarcastic remark, radioing to his crew, “Thanks, Honda”, when he stopped.
It was a pointed comment directed at the manufacturer, who is said to have been the driving force behind introducing hybrid technology to the series.
“It’s pretty annoying to have failures on the car because of a product we didn’t ask for that doesn’t improve the racing,” Rossi said.
“So that’s frustrating.”
Eponymous team owner-driver Ed Carpenter expressed his frustrations with the system.
“We’ve had two cars DNF this season,” Carpenter told Racer’s Marshall Pruett ahead of the 110th Indianapolis 500.
“So I don’t know that the hybrid folks will pay the engine damage bill, but I look forward to a day – if we’re going to continue to be hybrid – where we have one that’s robust.
“This thing is a ticking time bomb.”
The IndyCar Series continues at Gateway on June 8.
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