This is the 3614th most frequent Spanish word.
matado
"Matado" means "killed" or "worn out/exhausted," depending on context.
The word 'matado' here is the past participle of the verb 'matar' – 'to kill', used in the perfect tense.
El héroe ha matado al monstruo.
The hero has killed the monster.
In this sentence, 'matado' is used figuratively to express extreme exhaustion, equivalent to 'exhausted'.
Estoy tan cansado que me siento matado.
I'm so tired that I feel exhausted.
Here, 'matado' describes the state of being beaten or worn out, applied metaphorically to the car's condition.