How many years is Mario Mario?

As of most official sources, Mario (full name Mario Mario) is typically considered to be 24 to 26 years old in the games' lore.

However, Shigeru Miyamoto, the creator of Mario, once said in an interview that Mario is around 24 or 25 years old, despite his cartoonish appearance and long history.

So, while Mario the character debuted in 1981 (making him over 40 years old in real-world terms), his in-universe age remains in the mid-20s.