How did Quicksilver die? Pietro died in the same movie in which he was introduced, saving Hawkeye and a Sokovian child from a hail of Ultron-fired bullets. He was fast enough to move Clint Barton and the boy to safety but apparently not to dodge the bullets himself.

Why did they kill off Quicksilver?

First, his death was meant to raise the stakes of the story and show that there would be lasting consequences for Ultron's actions. Second, it subverted viewers' expectations.

Is Quicksilver really dead?

Quicksilver is fatally wounded after he turns against Richards and Kang, and chooses to die by Wanda's graveside. Pietro later appeared to have been somehow brought back to life.