This is why Tony Stark developed his armor

Captain America: Civil War divides the Avengers as Tony Stark and Steve Rogers clash over government control of superheroes. With the introduction of new heroes like Black Panther and Spider-Man, this action-packed film explores loyalty, friendship, and the consequences of power. It’s a thrilling and emotional journey that forever changes the Marvel Universe.

[Bredstikc]

Because Tony learns from his mistakes.

[RealGarticBotTrust]

The animation team really didn't want to animate the other parts on the old suit 😔😔😔

[wess]

Tony comes back to life. Builds a gamma radiation resistant from uru metal.

[LeviathanPlayz]

"It's nanotech, you like it?"

[ThePhuongarch]

His next suit is the mark 47 which is a repaired mark 46 that he used 😅

[Intrinsic]

As if the previous suit could be made without using the neno tech, every IC used in 1st one needed nanotech

[Sheph-um]

I’ve seen like 10 YouTuber talk about this very thing, down to the exact words 😂

[xheDeviLx]

Quantum is smaller than nano he’d still be able to get thru that is not why Tony Changed.

[Nk_Grv]

And this was the last time he improved his suit

[cesare_]

to be fair he was already working on nanotech, remember the watch that transforms in a glove?

[icantthinkausername]

Real reason: The cgi team got tired of animating the suit

[HOXERO]

The fact that other characters started using nanotechnology as well-

[Numbergamebot]

WHERE CAN I WATCH AVENGERS CIVIL WAR I CANT FIND THAT SHI ON ANYTHING

[rellik]

If the other Ironman suits weren't airtight how did Tony fly at high altitude, go underwater, not to mention into space? Just enjoy the movie, stop overthinking it, it's not a documentary.

[blueightysix]

Nanotech was lame, multiverses killed marvel.

[famalam]

Man that nano suit cgi looks terrible.