How to Say "flawed" in Spanish
The Spanish word for “flawed” is “defectuoso” — A2 level.

Examples
El juguete está defectuoso y no hace nada.
The toy is defective and doesn't do anything.
He devuelto la lavadora porque venía defectuosa de fábrica.
I returned the washing machine because it was faulty from the factory.
Su razonamiento es defectuoso porque parte de una mentira.
His reasoning is flawed because it starts from a lie.
Matching the Ending
Since this is an adjective, you must change the ending to match what you are describing: use 'defectuoso' for masculine things (el coche) and 'defectuosa' for feminine things (la silla).
Using 'Estar' vs 'Ser'
We usually use 'estar' when a specific item happens to be broken (Este radio está defectuoso). We use 'ser' if we are talking about a characteristic of a whole type or model (Ese modelo de coche es defectuoso).
Confusing 'Roto' with 'Defectuoso'
Mistake: “Using 'roto' to mean a factory error.”
Correction: Use 'roto' if something was physically smashed or broken after use; use 'defectuoso' if it was made wrong or doesn't work correctly due to a technical flaw.
Related Translations
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.